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Finding the Fourth Proportional to 72,257.58, 108,386.04 and 19,666.92

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Solution

The fourth proportional to 72,257.58, 108,386.04 and 19,666.92 is: 29,500.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,257.58 : 108,386.04 = 19,666.92 : x
  2. Step 2: Convert to fraction form
    72,257.58/108,386.04 = 19,666.92/x
  3. Step 3: Cross multiply
    72,257.58x = 108,386.04 × 19,666.92
  4. Step 4: Simplify right side
    72,257.58x = 2,131,619,577.80
  5. Step 5: Solve for x
    x = 2,131,619,577.80/72,257.58
  6. Step 6: Final answer
    x = 29,500.29

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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.