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Finding the Fourth Proportional to 70,612.76, 97,480.06 and 55,456.85

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Solution

The fourth proportional to 70,612.76, 97,480.06 and 55,456.85 is: 76,557.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,612.76 : 97,480.06 = 55,456.85 : x
  2. Step 2: Convert to fraction form
    70,612.76/97,480.06 = 55,456.85/x
  3. Step 3: Cross multiply
    70,612.76x = 97,480.06 × 55,456.85
  4. Step 4: Simplify right side
    70,612.76x = 5,405,937,170.47
  5. Step 5: Solve for x
    x = 5,405,937,170.47/70,612.76
  6. Step 6: Final answer
    x = 76,557.51

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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.