Home / 87,111.28-120,237.08-56,895.95

Finding the Fourth Proportional to 87,111.28, 120,237.08 and 56,895.95

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Solution

The fourth proportional to 87,111.28, 120,237.08 and 56,895.95 is: 78,531.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,111.28 : 120,237.08 = 56,895.95 : x
  2. Step 2: Convert to fraction form
    87,111.28/120,237.08 = 56,895.95/x
  3. Step 3: Cross multiply
    87,111.28x = 120,237.08 × 56,895.95
  4. Step 4: Simplify right side
    87,111.28x = 6,841,002,907.94
  5. Step 5: Solve for x
    x = 6,841,002,907.94/87,111.28
  6. Step 6: Final answer
    x = 78,531.77

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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.