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Finding the Fourth Proportional to 72,577.68, 108,873.36 and 28,207.83

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Solution

The fourth proportional to 72,577.68, 108,873.36 and 28,207.83 is: 42,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,577.68 : 108,873.36 = 28,207.83 : x
  2. Step 2: Convert to fraction form
    72,577.68/108,873.36 = 28,207.83/x
  3. Step 3: Cross multiply
    72,577.68x = 108,873.36 × 28,207.83
  4. Step 4: Simplify right side
    72,577.68x = 3,071,080,686.04
  5. Step 5: Solve for x
    x = 3,071,080,686.04/72,577.68
  6. Step 6: Final answer
    x = 42,314.40

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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.