Home / 66,815.01-92,201.69-39,972.32

Finding the Fourth Proportional to 66,815.01, 92,201.69 and 39,972.32

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Solution

The fourth proportional to 66,815.01, 92,201.69 and 39,972.32 is: 55,159.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,815.01 : 92,201.69 = 39,972.32 : x
  2. Step 2: Convert to fraction form
    66,815.01/92,201.69 = 39,972.32/x
  3. Step 3: Cross multiply
    66,815.01x = 92,201.69 × 39,972.32
  4. Step 4: Simplify right side
    66,815.01x = 3,685,515,457.22
  5. Step 5: Solve for x
    x = 3,685,515,457.22/66,815.01
  6. Step 6: Final answer
    x = 55,159.99

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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.