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Finding the Fourth Proportional to 70,616.60, 97,427.06 and 40,380.38

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Solution

The fourth proportional to 70,616.60, 97,427.06 and 40,380.38 is: 55,711.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,616.60 : 97,427.06 = 40,380.38 : x
  2. Step 2: Convert to fraction form
    70,616.60/97,427.06 = 40,380.38/x
  3. Step 3: Cross multiply
    70,616.60x = 97,427.06 × 40,380.38
  4. Step 4: Simplify right side
    70,616.60x = 3,934,141,705.08
  5. Step 5: Solve for x
    x = 3,934,141,705.08/70,616.60
  6. Step 6: Final answer
    x = 55,711.29

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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.