Home / 84,527,999.70-126,791,999.55-78,817,305.30

Finding the Fourth Proportional to 84,527,999.70, 126,791,999.55 and 78,817,305.30

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Solution

The fourth proportional to 84,527,999.70, 126,791,999.55 and 78,817,305.30 is: 118,225,957.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,527,999.70 : 126,791,999.55 = 78,817,305.30 : x
  2. Step 2: Convert to fraction form
    84,527,999.70/126,791,999.55 = 78,817,305.30/x
  3. Step 3: Cross multiply
    84,527,999.70x = 126,791,999.55 × 78,817,305.30
  4. Step 4: Simplify right side
    84,527,999.70x = 9,993,403,738,129,812
  5. Step 5: Solve for x
    x = 9,993,403,738,129,812/84,527,999.70
  6. Step 6: Final answer
    x = 118,225,957.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.