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Finding the Fourth Proportional to 70,688, 97,549.65 and 40,473.79

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Solution

The fourth proportional to 70,688, 97,549.65 and 40,473.79 is: 55,853.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,688 : 97,549.65 = 40,473.79 : x
  2. Step 2: Convert to fraction form
    70,688/97,549.65 = 40,473.79/x
  3. Step 3: Cross multiply
    70,688x = 97,549.65 × 40,473.79
  4. Step 4: Simplify right side
    70,688x = 3,948,203,358.56
  5. Step 5: Solve for x
    x = 3,948,203,358.56/70,688
  6. Step 6: Final answer
    x = 55,853.94

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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.