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Finding the Fourth Proportional to 70,608.80, 97,439.07 and 40,401.54

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Solution

The fourth proportional to 70,608.80, 97,439.07 and 40,401.54 is: 55,753.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,608.80 : 97,439.07 = 40,401.54 : x
  2. Step 2: Convert to fraction form
    70,608.80/97,439.07 = 40,401.54/x
  3. Step 3: Cross multiply
    70,608.80x = 97,439.07 × 40,401.54
  4. Step 4: Simplify right side
    70,608.80x = 3,936,688,484.17
  5. Step 5: Solve for x
    x = 3,936,688,484.17/70,608.80
  6. Step 6: Final answer
    x = 55,753.51

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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.