Home / 83,742.80-125,482.88-71,211.28

Finding the Fourth Proportional to 83,742.80, 125,482.88 and 71,211.28

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Solution

The fourth proportional to 83,742.80, 125,482.88 and 71,211.28 is: 106,705.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,742.80 : 125,482.88 = 71,211.28 : x
  2. Step 2: Convert to fraction form
    83,742.80/125,482.88 = 71,211.28/x
  3. Step 3: Cross multiply
    83,742.80x = 125,482.88 × 71,211.28
  4. Step 4: Simplify right side
    83,742.80x = 8,935,796,502.89
  5. Step 5: Solve for x
    x = 8,935,796,502.89/83,742.80
  6. Step 6: Final answer
    x = 106,705.25

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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.