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Finding the Fourth Proportional to 70,372.80, 97,114.95 and 38,543.04

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Solution

The fourth proportional to 70,372.80, 97,114.95 and 38,543.04 is: 53,189.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,372.80 : 97,114.95 = 38,543.04 : x
  2. Step 2: Convert to fraction form
    70,372.80/97,114.95 = 38,543.04/x
  3. Step 3: Cross multiply
    70,372.80x = 97,114.95 × 38,543.04
  4. Step 4: Simplify right side
    70,372.80x = 3,743,105,402.45
  5. Step 5: Solve for x
    x = 3,743,105,402.45/70,372.80
  6. Step 6: Final answer
    x = 53,189.66

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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.