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Finding the Fourth Proportional to 70,703.90, 97,568.89 and 38,872.55

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Solution

The fourth proportional to 70,703.90, 97,568.89 and 38,872.55 is: 53,642.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,703.90 : 97,568.89 = 38,872.55 : x
  2. Step 2: Convert to fraction form
    70,703.90/97,568.89 = 38,872.55/x
  3. Step 3: Cross multiply
    70,703.90x = 97,568.89 × 38,872.55
  4. Step 4: Simplify right side
    70,703.90x = 3,792,751,701.71
  5. Step 5: Solve for x
    x = 3,792,751,701.71/70,703.90
  6. Step 6: Final answer
    x = 53,642.75

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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.