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Finding the Fourth Proportional to 66,566.88, 91,854.72 and 38,281.68

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Solution

The fourth proportional to 66,566.88, 91,854.72 and 38,281.68 is: 52,824.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,566.88 : 91,854.72 = 38,281.68 : x
  2. Step 2: Convert to fraction form
    66,566.88/91,854.72 = 38,281.68/x
  3. Step 3: Cross multiply
    66,566.88x = 91,854.72 × 38,281.68
  4. Step 4: Simplify right side
    66,566.88x = 3,516,352,997.53
  5. Step 5: Solve for x
    x = 3,516,352,997.53/66,566.88
  6. Step 6: Final answer
    x = 52,824.36

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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.