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Finding the Fourth Proportional to 71,301.78, 98,325.09 and 47,429.46

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Solution

The fourth proportional to 71,301.78, 98,325.09 and 47,429.46 is: 65,405.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,301.78 : 98,325.09 = 47,429.46 : x
  2. Step 2: Convert to fraction form
    71,301.78/98,325.09 = 47,429.46/x
  3. Step 3: Cross multiply
    71,301.78x = 98,325.09 × 47,429.46
  4. Step 4: Simplify right side
    71,301.78x = 4,663,505,923.15
  5. Step 5: Solve for x
    x = 4,663,505,923.15/71,301.78
  6. Step 6: Final answer
    x = 65,405.18

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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.