Home / 98,920.80-136,557.99-56,471.13

Finding the Fourth Proportional to 98,920.80, 136,557.99 and 56,471.13

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Solution

The fourth proportional to 98,920.80, 136,557.99 and 56,471.13 is: 77,957.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,920.80 : 136,557.99 = 56,471.13 : x
  2. Step 2: Convert to fraction form
    98,920.80/136,557.99 = 56,471.13/x
  3. Step 3: Cross multiply
    98,920.80x = 136,557.99 × 56,471.13
  4. Step 4: Simplify right side
    98,920.80x = 7,711,584,005.83
  5. Step 5: Solve for x
    x = 7,711,584,005.83/98,920.80
  6. Step 6: Final answer
    x = 77,957.15

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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.