Home / 78,465.17-108,282.62-42,655.21

Finding the Fourth Proportional to 78,465.17, 108,282.62 and 42,655.21

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Solution

The fourth proportional to 78,465.17, 108,282.62 and 42,655.21 is: 58,864.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,465.17 : 108,282.62 = 42,655.21 : x
  2. Step 2: Convert to fraction form
    78,465.17/108,282.62 = 42,655.21/x
  3. Step 3: Cross multiply
    78,465.17x = 108,282.62 × 42,655.21
  4. Step 4: Simplify right side
    78,465.17x = 4,618,817,731.38
  5. Step 5: Solve for x
    x = 4,618,817,731.38/78,465.17
  6. Step 6: Final answer
    x = 58,864.56

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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.