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Finding the Fourth Proportional to 107,543.79, 161,312.04 and 40,981.50

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Solution

The fourth proportional to 107,543.79, 161,312.04 and 40,981.50 is: 61,470.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,543.79 : 161,312.04 = 40,981.50 : x
  2. Step 2: Convert to fraction form
    107,543.79/161,312.04 = 40,981.50/x
  3. Step 3: Cross multiply
    107,543.79x = 161,312.04 × 40,981.50
  4. Step 4: Simplify right side
    107,543.79x = 6,610,809,367.26
  5. Step 5: Solve for x
    x = 6,610,809,367.26/107,543.79
  6. Step 6: Final answer
    x = 61,470.86

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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.