Home / 81,575.14-112,664.91-56,159.50

Finding the Fourth Proportional to 81,575.14, 112,664.91 and 56,159.50

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Solution

The fourth proportional to 81,575.14, 112,664.91 and 56,159.50 is: 77,562.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,575.14 : 112,664.91 = 56,159.50 : x
  2. Step 2: Convert to fraction form
    81,575.14/112,664.91 = 56,159.50/x
  3. Step 3: Cross multiply
    81,575.14x = 112,664.91 × 56,159.50
  4. Step 4: Simplify right side
    81,575.14x = 6,327,205,013.15
  5. Step 5: Solve for x
    x = 6,327,205,013.15/81,575.14
  6. Step 6: Final answer
    x = 77,562.91

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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.