Home / 99,732.87-137,630.70-56,712.37

Finding the Fourth Proportional to 99,732.87, 137,630.70 and 56,712.37

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Solution

The fourth proportional to 99,732.87, 137,630.70 and 56,712.37 is: 78,262.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,732.87 : 137,630.70 = 56,712.37 : x
  2. Step 2: Convert to fraction form
    99,732.87/137,630.70 = 56,712.37/x
  3. Step 3: Cross multiply
    99,732.87x = 137,630.70 × 56,712.37
  4. Step 4: Simplify right side
    99,732.87x = 7,805,363,050.35
  5. Step 5: Solve for x
    x = 7,805,363,050.35/99,732.87
  6. Step 6: Final answer
    x = 78,262.69

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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.