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Finding the Fourth Proportional to 70,347.91, 97,080.11 and 38,516.80

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Solution

The fourth proportional to 70,347.91, 97,080.11 and 38,516.80 is: 53,153.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,347.91 : 97,080.11 = 38,516.80 : x
  2. Step 2: Convert to fraction form
    70,347.91/97,080.11 = 38,516.80/x
  3. Step 3: Cross multiply
    70,347.91x = 97,080.11 × 38,516.80
  4. Step 4: Simplify right side
    70,347.91x = 3,739,215,180.85
  5. Step 5: Solve for x
    x = 3,739,215,180.85/70,347.91
  6. Step 6: Final answer
    x = 53,153.18

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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.