Home / 78,961.13-108,966.65-43,151.69

Finding the Fourth Proportional to 78,961.13, 108,966.65 and 43,151.69

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Solution

The fourth proportional to 78,961.13, 108,966.65 and 43,151.69 is: 59,549.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,961.13 : 108,966.65 = 43,151.69 : x
  2. Step 2: Convert to fraction form
    78,961.13/108,966.65 = 43,151.69/x
  3. Step 3: Cross multiply
    78,961.13x = 108,966.65 × 43,151.69
  4. Step 4: Simplify right side
    78,961.13x = 4,702,094,885.38
  5. Step 5: Solve for x
    x = 4,702,094,885.38/78,961.13
  6. Step 6: Final answer
    x = 59,549.49

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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.