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Finding the Fourth Proportional to 70,360.68, 97,106.96 and 40,139.04

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Solution

The fourth proportional to 70,360.68, 97,106.96 and 40,139.04 is: 55,397.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,360.68 : 97,106.96 = 40,139.04 : x
  2. Step 2: Convert to fraction form
    70,360.68/97,106.96 = 40,139.04/x
  3. Step 3: Cross multiply
    70,360.68x = 97,106.96 × 40,139.04
  4. Step 4: Simplify right side
    70,360.68x = 3,897,780,151.72
  5. Step 5: Solve for x
    x = 3,897,780,151.72/70,360.68
  6. Step 6: Final answer
    x = 55,397.14

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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.