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Finding the Fourth Proportional to 72,458.74, 108,719.40 and 39,202.24

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Solution

The fourth proportional to 72,458.74, 108,719.40 and 39,202.24 is: 58,820.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,458.74 : 108,719.40 = 39,202.24 : x
  2. Step 2: Convert to fraction form
    72,458.74/108,719.40 = 39,202.24/x
  3. Step 3: Cross multiply
    72,458.74x = 108,719.40 × 39,202.24
  4. Step 4: Simplify right side
    72,458.74x = 4,262,044,011.46
  5. Step 5: Solve for x
    x = 4,262,044,011.46/72,458.74
  6. Step 6: Final answer
    x = 58,820.29

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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.