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Finding the Fourth Proportional to 70,386, 97,131.48 and 38,554.80

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Solution

The fourth proportional to 70,386, 97,131.48 and 38,554.80 is: 53,204.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,386 : 97,131.48 = 38,554.80 : x
  2. Step 2: Convert to fraction form
    70,386/97,131.48 = 38,554.80/x
  3. Step 3: Cross multiply
    70,386x = 97,131.48 × 38,554.80
  4. Step 4: Simplify right side
    70,386x = 3,744,884,785.10
  5. Step 5: Solve for x
    x = 3,744,884,785.10/70,386
  6. Step 6: Final answer
    x = 53,204.97

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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.