Home / 83,850.14-115,702.67-56,685.32

Finding the Fourth Proportional to 83,850.14, 115,702.67 and 56,685.32

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Solution

The fourth proportional to 83,850.14, 115,702.67 and 56,685.32 is: 78,218.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,850.14 : 115,702.67 = 56,685.32 : x
  2. Step 2: Convert to fraction form
    83,850.14/115,702.67 = 56,685.32/x
  3. Step 3: Cross multiply
    83,850.14x = 115,702.67 × 56,685.32
  4. Step 4: Simplify right side
    83,850.14x = 6,558,642,011.86
  5. Step 5: Solve for x
    x = 6,558,642,011.86/83,850.14
  6. Step 6: Final answer
    x = 78,218.62

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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.