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Finding the Fourth Proportional to 70,671.25, 97,520.61 and 40,449.70

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Solution

The fourth proportional to 70,671.25, 97,520.61 and 40,449.70 is: 55,817.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,671.25 : 97,520.61 = 40,449.70 : x
  2. Step 2: Convert to fraction form
    70,671.25/97,520.61 = 40,449.70/x
  3. Step 3: Cross multiply
    70,671.25x = 97,520.61 × 40,449.70
  4. Step 4: Simplify right side
    70,671.25x = 3,944,679,418.32
  5. Step 5: Solve for x
    x = 3,944,679,418.32/70,671.25
  6. Step 6: Final answer
    x = 55,817.31

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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.