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Finding the Fourth Proportional to 66,337.64, 91,538.22 and 39,488.84

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Solution

The fourth proportional to 66,337.64, 91,538.22 and 39,488.84 is: 54,490.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,337.64 : 91,538.22 = 39,488.84 : x
  2. Step 2: Convert to fraction form
    66,337.64/91,538.22 = 39,488.84/x
  3. Step 3: Cross multiply
    66,337.64x = 91,538.22 × 39,488.84
  4. Step 4: Simplify right side
    66,337.64x = 3,614,738,123.46
  5. Step 5: Solve for x
    x = 3,614,738,123.46/66,337.64
  6. Step 6: Final answer
    x = 54,490.00

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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.