Home / 78,901.29-118,132.34-61,405.29

Finding the Fourth Proportional to 78,901.29, 118,132.34 and 61,405.29

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Solution

The fourth proportional to 78,901.29, 118,132.34 and 61,405.29 is: 91,937.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,901.29 : 118,132.34 = 61,405.29 : x
  2. Step 2: Convert to fraction form
    78,901.29/118,132.34 = 61,405.29/x
  3. Step 3: Cross multiply
    78,901.29x = 118,132.34 × 61,405.29
  4. Step 4: Simplify right side
    78,901.29x = 7,253,950,289.05
  5. Step 5: Solve for x
    x = 7,253,950,289.05/78,901.29
  6. Step 6: Final answer
    x = 91,937.03

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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.