Home / 66,666.63-92,001.38-39,804.12

Finding the Fourth Proportional to 66,666.63, 92,001.38 and 39,804.12

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Solution

The fourth proportional to 66,666.63, 92,001.38 and 39,804.12 is: 54,930.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,666.63 : 92,001.38 = 39,804.12 : x
  2. Step 2: Convert to fraction form
    66,666.63/92,001.38 = 39,804.12/x
  3. Step 3: Cross multiply
    66,666.63x = 92,001.38 × 39,804.12
  4. Step 4: Simplify right side
    66,666.63x = 3,662,033,969.69
  5. Step 5: Solve for x
    x = 3,662,033,969.69/66,666.63
  6. Step 6: Final answer
    x = 54,930.54

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Half scale
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Double scale
Find fourth proportional to 66,667.63, 92,002.76 and 39,805.12
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.