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Finding the Fourth Proportional to 72,498.96, 100,034.68 and 43,812.80

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Solution

The fourth proportional to 72,498.96, 100,034.68 and 43,812.80 is: 60,453.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,498.96 : 100,034.68 = 43,812.80 : x
  2. Step 2: Convert to fraction form
    72,498.96/100,034.68 = 43,812.80/x
  3. Step 3: Cross multiply
    72,498.96x = 100,034.68 × 43,812.80
  4. Step 4: Simplify right side
    72,498.96x = 4,382,799,427.90
  5. Step 5: Solve for x
    x = 4,382,799,427.90/72,498.96
  6. Step 6: Final answer
    x = 60,453.27

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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.