Home / 78,302.80-117,353.61-35,577.02

Finding the Fourth Proportional to 78,302.80, 117,353.61 and 35,577.02

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Solution

The fourth proportional to 78,302.80, 117,353.61 and 35,577.02 is: 53,319.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,302.80 : 117,353.61 = 35,577.02 : x
  2. Step 2: Convert to fraction form
    78,302.80/117,353.61 = 35,577.02/x
  3. Step 3: Cross multiply
    78,302.80x = 117,353.61 × 35,577.02
  4. Step 4: Simplify right side
    78,302.80x = 4,175,092,023.43
  5. Step 5: Solve for x
    x = 4,175,092,023.43/78,302.80
  6. Step 6: Final answer
    x = 53,319.83

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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.