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Finding the Fourth Proportional to 78,270.71, 108,013.60 and 44,278.52

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Solution

The fourth proportional to 78,270.71, 108,013.60 and 44,278.52 is: 61,104.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,270.71 : 108,013.60 = 44,278.52 : x
  2. Step 2: Convert to fraction form
    78,270.71/108,013.60 = 44,278.52/x
  3. Step 3: Cross multiply
    78,270.71x = 108,013.60 × 44,278.52
  4. Step 4: Simplify right side
    78,270.71x = 4,782,681,863.15
  5. Step 5: Solve for x
    x = 4,782,681,863.15/78,270.71
  6. Step 6: Final answer
    x = 61,104.37

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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.