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Finding the Fourth Proportional to 66,282.32, 91,472.80 and 37,988.08

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Solution

The fourth proportional to 66,282.32, 91,472.80 and 37,988.08 is: 52,425.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,282.32 : 91,472.80 = 37,988.08 : x
  2. Step 2: Convert to fraction form
    66,282.32/91,472.80 = 37,988.08/x
  3. Step 3: Cross multiply
    66,282.32x = 91,472.80 × 37,988.08
  4. Step 4: Simplify right side
    66,282.32x = 3,474,876,044.22
  5. Step 5: Solve for x
    x = 3,474,876,044.22/66,282.32
  6. Step 6: Final answer
    x = 52,425.38

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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.