Home / 93,829.92-129,488.40-51,390.78

Finding the Fourth Proportional to 93,829.92, 129,488.40 and 51,390.78

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Solution

The fourth proportional to 93,829.92, 129,488.40 and 51,390.78 is: 70,920.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,829.92 : 129,488.40 = 51,390.78 : x
  2. Step 2: Convert to fraction form
    93,829.92/129,488.40 = 51,390.78/x
  3. Step 3: Cross multiply
    93,829.92x = 129,488.40 × 51,390.78
  4. Step 4: Simplify right side
    93,829.92x = 6,654,509,876.95
  5. Step 5: Solve for x
    x = 6,654,509,876.95/93,829.92
  6. Step 6: Final answer
    x = 70,920.98

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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.