Home / 78,655.07-108,540.68-42,845.38

Finding the Fourth Proportional to 78,655.07, 108,540.68 and 42,845.38

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Solution

The fourth proportional to 78,655.07, 108,540.68 and 42,845.38 is: 59,124.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,655.07 : 108,540.68 = 42,845.38 : x
  2. Step 2: Convert to fraction form
    78,655.07/108,540.68 = 42,845.38/x
  3. Step 3: Cross multiply
    78,655.07x = 108,540.68 × 42,845.38
  4. Step 4: Simplify right side
    78,655.07x = 4,650,466,194.48
  5. Step 5: Solve for x
    x = 4,650,466,194.48/78,655.07
  6. Step 6: Final answer
    x = 59,124.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.