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Finding the Fourth Proportional to 70,374.78, 97,117.19 and 38,543.76

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Solution

The fourth proportional to 70,374.78, 97,117.19 and 38,543.76 is: 53,190.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,374.78 : 97,117.19 = 38,543.76 : x
  2. Step 2: Convert to fraction form
    70,374.78/97,117.19 = 38,543.76/x
  3. Step 3: Cross multiply
    70,374.78x = 97,117.19 × 38,543.76
  4. Step 4: Simplify right side
    70,374.78x = 3,743,261,663.23
  5. Step 5: Solve for x
    x = 3,743,261,663.23/70,374.78
  6. Step 6: Final answer
    x = 53,190.39

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Double scale
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1.5x scale

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.