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Finding the Fourth Proportional to 70,638.66, 97,479.03 and 38,805.54

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Solution

The fourth proportional to 70,638.66, 97,479.03 and 38,805.54 is: 53,550.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,638.66 : 97,479.03 = 38,805.54 : x
  2. Step 2: Convert to fraction form
    70,638.66/97,479.03 = 38,805.54/x
  3. Step 3: Cross multiply
    70,638.66x = 97,479.03 × 38,805.54
  4. Step 4: Simplify right side
    70,638.66x = 3,782,726,397.83
  5. Step 5: Solve for x
    x = 3,782,726,397.83/70,638.66
  6. Step 6: Final answer
    x = 53,550.37

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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.