Home / 87,631.84-120,931.86-47,887.84

Finding the Fourth Proportional to 87,631.84, 120,931.86 and 47,887.84

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Solution

The fourth proportional to 87,631.84, 120,931.86 and 47,887.84 is: 66,085.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,631.84 : 120,931.86 = 47,887.84 : x
  2. Step 2: Convert to fraction form
    87,631.84/120,931.86 = 47,887.84/x
  3. Step 3: Cross multiply
    87,631.84x = 120,931.86 × 47,887.84
  4. Step 4: Simplify right side
    87,631.84x = 5,791,165,562.58
  5. Step 5: Solve for x
    x = 5,791,165,562.58/87,631.84
  6. Step 6: Final answer
    x = 66,085.18

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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.