Home / 86,815.70-129,964.35-51,737.30

Finding the Fourth Proportional to 86,815.70, 129,964.35 and 51,737.30

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Solution

The fourth proportional to 86,815.70, 129,964.35 and 51,737.30 is: 77,451.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,815.70 : 129,964.35 = 51,737.30 : x
  2. Step 2: Convert to fraction form
    86,815.70/129,964.35 = 51,737.30/x
  3. Step 3: Cross multiply
    86,815.70x = 129,964.35 × 51,737.30
  4. Step 4: Simplify right side
    86,815.70x = 6,724,004,565.26
  5. Step 5: Solve for x
    x = 6,724,004,565.26/86,815.70
  6. Step 6: Final answer
    x = 77,451.48

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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.