Home / 99,521.88-137,352.77-57,079.50

Finding the Fourth Proportional to 99,521.88, 137,352.77 and 57,079.50

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Solution

The fourth proportional to 99,521.88, 137,352.77 and 57,079.50 is: 78,776.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,521.88 : 137,352.77 = 57,079.50 : x
  2. Step 2: Convert to fraction form
    99,521.88/137,352.77 = 57,079.50/x
  3. Step 3: Cross multiply
    99,521.88x = 137,352.77 × 57,079.50
  4. Step 4: Simplify right side
    99,521.88x = 7,840,027,149.82
  5. Step 5: Solve for x
    x = 7,840,027,149.82/99,521.88
  6. Step 6: Final answer
    x = 78,776.92

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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.