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Finding the Fourth Proportional to 55,687.30, 83,530.95 and 42,565.30

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Solution

The fourth proportional to 55,687.30, 83,530.95 and 42,565.30 is: 63,847.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,687.30 : 83,530.95 = 42,565.30 : x
  2. Step 2: Convert to fraction form
    55,687.30/83,530.95 = 42,565.30/x
  3. Step 3: Cross multiply
    55,687.30x = 83,530.95 × 42,565.30
  4. Step 4: Simplify right side
    55,687.30x = 3,555,519,946.04
  5. Step 5: Solve for x
    x = 3,555,519,946.04/55,687.30
  6. Step 6: Final answer
    x = 63,847.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.