Home / 78,650.31-117,877-61,944.38

Finding the Fourth Proportional to 78,650.31, 117,877 and 61,944.38

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Solution

The fourth proportional to 78,650.31, 117,877 and 61,944.38 is: 92,839.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,650.31 : 117,877 = 61,944.38 : x
  2. Step 2: Convert to fraction form
    78,650.31/117,877 = 61,944.38/x
  3. Step 3: Cross multiply
    78,650.31x = 117,877 × 61,944.38
  4. Step 4: Simplify right side
    78,650.31x = 7,301,817,681.26
  5. Step 5: Solve for x
    x = 7,301,817,681.26/78,650.31
  6. Step 6: Final answer
    x = 92,839.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.