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Finding the Fourth Proportional to 72,592.96, 100,134.84 and 45,688.76

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Solution

The fourth proportional to 72,592.96, 100,134.84 and 45,688.76 is: 63,023.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,592.96 : 100,134.84 = 45,688.76 : x
  2. Step 2: Convert to fraction form
    72,592.96/100,134.84 = 45,688.76/x
  3. Step 3: Cross multiply
    72,592.96x = 100,134.84 × 45,688.76
  4. Step 4: Simplify right side
    72,592.96x = 4,575,035,943.28
  5. Step 5: Solve for x
    x = 4,575,035,943.28/72,592.96
  6. Step 6: Final answer
    x = 63,023.14

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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.