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Finding the Fourth Proportional to 70,531.16, 97,339.16 and 38,706.28

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Solution

The fourth proportional to 70,531.16, 97,339.16 and 38,706.28 is: 53,418.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,531.16 : 97,339.16 = 38,706.28 : x
  2. Step 2: Convert to fraction form
    70,531.16/97,339.16 = 38,706.28/x
  3. Step 3: Cross multiply
    70,531.16x = 97,339.16 × 38,706.28
  4. Step 4: Simplify right side
    70,531.16x = 3,767,636,781.92
  5. Step 5: Solve for x
    x = 3,767,636,781.92/70,531.16
  6. Step 6: Final answer
    x = 53,418.05

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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.