Home / 72,697.15-109,001.07-28,272.13

Finding the Fourth Proportional to 72,697.15, 109,001.07 and 28,272.13

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Solution

The fourth proportional to 72,697.15, 109,001.07 and 28,272.13 is: 42,390.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,697.15 : 109,001.07 = 28,272.13 : x
  2. Step 2: Convert to fraction form
    72,697.15/109,001.07 = 28,272.13/x
  3. Step 3: Cross multiply
    72,697.15x = 109,001.07 × 28,272.13
  4. Step 4: Simplify right side
    72,697.15x = 3,081,692,421.18
  5. Step 5: Solve for x
    x = 3,081,692,421.18/72,697.15
  6. Step 6: Final answer
    x = 42,390.83

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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.