Home / 83,479.92-124,592.70-72,185.28

Finding the Fourth Proportional to 83,479.92, 124,592.70 and 72,185.28

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Solution

The fourth proportional to 83,479.92, 124,592.70 and 72,185.28 is: 107,735.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,479.92 : 124,592.70 = 72,185.28 : x
  2. Step 2: Convert to fraction form
    83,479.92/124,592.70 = 72,185.28/x
  3. Step 3: Cross multiply
    83,479.92x = 124,592.70 × 72,185.28
  4. Step 4: Simplify right side
    83,479.92x = 8,993,758,935.46
  5. Step 5: Solve for x
    x = 8,993,758,935.46/83,479.92
  6. Step 6: Final answer
    x = 107,735.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.