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Finding the Fourth Proportional to 70,910.75, 97,855.52 and 38,645.63

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Solution

The fourth proportional to 70,910.75, 97,855.52 and 38,645.63 is: 53,330.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,910.75 : 97,855.52 = 38,645.63 : x
  2. Step 2: Convert to fraction form
    70,910.75/97,855.52 = 38,645.63/x
  3. Step 3: Cross multiply
    70,910.75x = 97,855.52 × 38,645.63
  4. Step 4: Simplify right side
    70,910.75x = 3,781,688,219.38
  5. Step 5: Solve for x
    x = 3,781,688,219.38/70,910.75
  6. Step 6: Final answer
    x = 53,330.25

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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.