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Finding the Fourth Proportional to 70,843.32, 97,764.48 and 39,013.20

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Solution

The fourth proportional to 70,843.32, 97,764.48 and 39,013.20 is: 53,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,843.32 : 97,764.48 = 39,013.20 : x
  2. Step 2: Convert to fraction form
    70,843.32/97,764.48 = 39,013.20/x
  3. Step 3: Cross multiply
    70,843.32x = 97,764.48 × 39,013.20
  4. Step 4: Simplify right side
    70,843.32x = 3,814,105,211.14
  5. Step 5: Solve for x
    x = 3,814,105,211.14/70,843.32
  6. Step 6: Final answer
    x = 53,838.60

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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.