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Finding the Fourth Proportional to 70,451.56, 97,223.16 and 38,619.78

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Solution

The fourth proportional to 70,451.56, 97,223.16 and 38,619.78 is: 53,295.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,451.56 : 97,223.16 = 38,619.78 : x
  2. Step 2: Convert to fraction form
    70,451.56/97,223.16 = 38,619.78/x
  3. Step 3: Cross multiply
    70,451.56x = 97,223.16 × 38,619.78
  4. Step 4: Simplify right side
    70,451.56x = 3,754,737,050.10
  5. Step 5: Solve for x
    x = 3,754,737,050.10/70,451.56
  6. Step 6: Final answer
    x = 53,295.30

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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.