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Finding the Fourth Proportional to 66,465.80, 91,737.70 and 42,262.09

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Solution

The fourth proportional to 66,465.80, 91,737.70 and 42,262.09 is: 58,331.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,465.80 : 91,737.70 = 42,262.09 : x
  2. Step 2: Convert to fraction form
    66,465.80/91,737.70 = 42,262.09/x
  3. Step 3: Cross multiply
    66,465.80x = 91,737.70 × 42,262.09
  4. Step 4: Simplify right side
    66,465.80x = 3,877,026,691.56
  5. Step 5: Solve for x
    x = 3,877,026,691.56/66,465.80
  6. Step 6: Final answer
    x = 58,331.15

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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.