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Finding the Fourth Proportional to 72,250.03, 108,375.20 and 38,985.76

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Solution

The fourth proportional to 72,250.03, 108,375.20 and 38,985.76 is: 58,478.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,250.03 : 108,375.20 = 38,985.76 : x
  2. Step 2: Convert to fraction form
    72,250.03/108,375.20 = 38,985.76/x
  3. Step 3: Cross multiply
    72,250.03x = 108,375.20 × 38,985.76
  4. Step 4: Simplify right side
    72,250.03x = 4,225,089,537.15
  5. Step 5: Solve for x
    x = 4,225,089,537.15/72,250.03
  6. Step 6: Final answer
    x = 58,478.72

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1.5x scale

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.