Home / 87,657.12-120,957.90-51,840.14

Finding the Fourth Proportional to 87,657.12, 120,957.90 and 51,840.14

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Solution

The fourth proportional to 87,657.12, 120,957.90 and 51,840.14 is: 71,534.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,657.12 : 120,957.90 = 51,840.14 : x
  2. Step 2: Convert to fraction form
    87,657.12/120,957.90 = 51,840.14/x
  3. Step 3: Cross multiply
    87,657.12x = 120,957.90 × 51,840.14
  4. Step 4: Simplify right side
    87,657.12x = 6,270,473,865.32
  5. Step 5: Solve for x
    x = 6,270,473,865.32/87,657.12
  6. Step 6: Final answer
    x = 71,534.11

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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.