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Finding the Fourth Proportional to 66,570.88, 91,860.24 and 38,285.68

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Solution

The fourth proportional to 66,570.88, 91,860.24 and 38,285.68 is: 52,829.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,570.88 : 91,860.24 = 38,285.68 : x
  2. Step 2: Convert to fraction form
    66,570.88/91,860.24 = 38,285.68/x
  3. Step 3: Cross multiply
    66,570.88x = 91,860.24 × 38,285.68
  4. Step 4: Simplify right side
    66,570.88x = 3,516,931,753.36
  5. Step 5: Solve for x
    x = 3,516,931,753.36/66,570.88
  6. Step 6: Final answer
    x = 52,829.88

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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.