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Finding the Fourth Proportional to 66,673.74, 91,966.41 and 42,762.54

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Solution

The fourth proportional to 66,673.74, 91,966.41 and 42,762.54 is: 58,984.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,673.74 : 91,966.41 = 42,762.54 : x
  2. Step 2: Convert to fraction form
    66,673.74/91,966.41 = 42,762.54/x
  3. Step 3: Cross multiply
    66,673.74x = 91,966.41 × 42,762.54
  4. Step 4: Simplify right side
    66,673.74x = 3,932,717,286.28
  5. Step 5: Solve for x
    x = 3,932,717,286.28/66,673.74
  6. Step 6: Final answer
    x = 58,984.50

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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.