Home / 99,624.80-149,534.40-49,761.20

Finding the Fourth Proportional to 99,624.80, 149,534.40 and 49,761.20

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Solution

The fourth proportional to 99,624.80, 149,534.40 and 49,761.20 is: 74,690.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,624.80 : 149,534.40 = 49,761.20 : x
  2. Step 2: Convert to fraction form
    99,624.80/149,534.40 = 49,761.20/x
  3. Step 3: Cross multiply
    99,624.80x = 149,534.40 × 49,761.20
  4. Step 4: Simplify right side
    99,624.80x = 7,441,011,185.28
  5. Step 5: Solve for x
    x = 7,441,011,185.28/99,624.80
  6. Step 6: Final answer
    x = 74,690.35

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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.