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Finding the Fourth Proportional to 70,345.65, 97,073.14 and 38,508.39

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Solution

The fourth proportional to 70,345.65, 97,073.14 and 38,508.39 is: 53,139.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,345.65 : 97,073.14 = 38,508.39 : x
  2. Step 2: Convert to fraction form
    70,345.65/97,073.14 = 38,508.39/x
  3. Step 3: Cross multiply
    70,345.65x = 97,073.14 × 38,508.39
  4. Step 4: Simplify right side
    70,345.65x = 3,738,130,333.64
  5. Step 5: Solve for x
    x = 3,738,130,333.64/70,345.65
  6. Step 6: Final answer
    x = 53,139.47

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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.