Home / 74,385.31-111,577.97-18,981.31

Finding the Fourth Proportional to 74,385.31, 111,577.97 and 18,981.31

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Solution

The fourth proportional to 74,385.31, 111,577.97 and 18,981.31 is: 28,471.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,385.31 : 111,577.97 = 18,981.31 : x
  2. Step 2: Convert to fraction form
    74,385.31/111,577.97 = 18,981.31/x
  3. Step 3: Cross multiply
    74,385.31x = 111,577.97 × 18,981.31
  4. Step 4: Simplify right side
    74,385.31x = 2,117,896,037.74
  5. Step 5: Solve for x
    x = 2,117,896,037.74/74,385.31
  6. Step 6: Final answer
    x = 28,471.97

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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.