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Finding the Fourth Proportional to 92,751.04, 127,856.86 and 72,572.86

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Solution

The fourth proportional to 92,751.04, 127,856.86 and 72,572.86 is: 100,041.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,751.04 : 127,856.86 = 72,572.86 : x
  2. Step 2: Convert to fraction form
    92,751.04/127,856.86 = 72,572.86/x
  3. Step 3: Cross multiply
    92,751.04x = 127,856.86 × 72,572.86
  4. Step 4: Simplify right side
    92,751.04x = 9,278,938,000.82
  5. Step 5: Solve for x
    x = 9,278,938,000.82/92,751.04
  6. Step 6: Final answer
    x = 100,041.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.