Home / 84,309.57-126,478.08-39,375.86

Finding the Fourth Proportional to 84,309.57, 126,478.08 and 39,375.86

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Solution

The fourth proportional to 84,309.57, 126,478.08 and 39,375.86 is: 59,070.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,309.57 : 126,478.08 = 39,375.86 : x
  2. Step 2: Convert to fraction form
    84,309.57/126,478.08 = 39,375.86/x
  3. Step 3: Cross multiply
    84,309.57x = 126,478.08 × 39,375.86
  4. Step 4: Simplify right side
    84,309.57x = 4,980,182,538.76
  5. Step 5: Solve for x
    x = 4,980,182,538.76/84,309.57
  6. Step 6: Final answer
    x = 59,070.19

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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.