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Finding the Fourth Proportional to 70,479, 97,260.34 and 38,647.80

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Solution

The fourth proportional to 70,479, 97,260.34 and 38,647.80 is: 53,333.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,479 : 97,260.34 = 38,647.80 : x
  2. Step 2: Convert to fraction form
    70,479/97,260.34 = 38,647.80/x
  3. Step 3: Cross multiply
    70,479x = 97,260.34 × 38,647.80
  4. Step 4: Simplify right side
    70,479x = 3,758,898,168.25
  5. Step 5: Solve for x
    x = 3,758,898,168.25/70,479
  6. Step 6: Final answer
    x = 53,333.59

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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.