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Finding the Fourth Proportional to 70,937.78, 97,891.15 and 38,671.70

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Solution

The fourth proportional to 70,937.78, 97,891.15 and 38,671.70 is: 53,365.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,937.78 : 97,891.15 = 38,671.70 : x
  2. Step 2: Convert to fraction form
    70,937.78/97,891.15 = 38,671.70/x
  3. Step 3: Cross multiply
    70,937.78x = 97,891.15 × 38,671.70
  4. Step 4: Simplify right side
    70,937.78x = 3,785,616,671.83
  5. Step 5: Solve for x
    x = 3,785,616,671.83/70,937.78
  6. Step 6: Final answer
    x = 53,365.31

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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.