Home / 78,820.31-118,227.15-36,685.89

Finding the Fourth Proportional to 78,820.31, 118,227.15 and 36,685.89

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Solution

The fourth proportional to 78,820.31, 118,227.15 and 36,685.89 is: 55,027.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,820.31 : 118,227.15 = 36,685.89 : x
  2. Step 2: Convert to fraction form
    78,820.31/118,227.15 = 36,685.89/x
  3. Step 3: Cross multiply
    78,820.31x = 118,227.15 × 36,685.89
  4. Step 4: Simplify right side
    78,820.31x = 4,337,268,423.77
  5. Step 5: Solve for x
    x = 4,337,268,423.77/78,820.31
  6. Step 6: Final answer
    x = 55,027.30

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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.