Home / 78,463.68-108,282.02-42,656.15

Finding the Fourth Proportional to 78,463.68, 108,282.02 and 42,656.15

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Solution

The fourth proportional to 78,463.68, 108,282.02 and 42,656.15 is: 58,866.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,463.68 : 108,282.02 = 42,656.15 : x
  2. Step 2: Convert to fraction form
    78,463.68/108,282.02 = 42,656.15/x
  3. Step 3: Cross multiply
    78,463.68x = 108,282.02 × 42,656.15
  4. Step 4: Simplify right side
    78,463.68x = 4,618,893,332.73
  5. Step 5: Solve for x
    x = 4,618,893,332.73/78,463.68
  6. Step 6: Final answer
    x = 58,866.64

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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.