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Finding the Fourth Proportional to 70,375.21, 97,120.13 and 38,545.87

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Solution

The fourth proportional to 70,375.21, 97,120.13 and 38,545.87 is: 53,194.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,375.21 : 97,120.13 = 38,545.87 : x
  2. Step 2: Convert to fraction form
    70,375.21/97,120.13 = 38,545.87/x
  3. Step 3: Cross multiply
    70,375.21x = 97,120.13 × 38,545.87
  4. Step 4: Simplify right side
    70,375.21x = 3,743,579,712.63
  5. Step 5: Solve for x
    x = 3,743,579,712.63/70,375.21
  6. Step 6: Final answer
    x = 53,194.58

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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.