Home / 72,897.05-109,354.83-28,518.11

Finding the Fourth Proportional to 72,897.05, 109,354.83 and 28,518.11

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Solution

The fourth proportional to 72,897.05, 109,354.83 and 28,518.11 is: 42,780.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,897.05 : 109,354.83 = 28,518.11 : x
  2. Step 2: Convert to fraction form
    72,897.05/109,354.83 = 28,518.11/x
  3. Step 3: Cross multiply
    72,897.05x = 109,354.83 × 28,518.11
  4. Step 4: Simplify right side
    72,897.05x = 3,118,593,070.97
  5. Step 5: Solve for x
    x = 3,118,593,070.97/72,897.05
  6. Step 6: Final answer
    x = 42,780.79

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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.