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Finding the Fourth Proportional to 47,407.60, 71,143.80 and 34,271.20

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Solution

The fourth proportional to 47,407.60, 71,143.80 and 34,271.20 is: 51,430.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,407.60 : 71,143.80 = 34,271.20 : x
  2. Step 2: Convert to fraction form
    47,407.60/71,143.80 = 34,271.20/x
  3. Step 3: Cross multiply
    47,407.60x = 71,143.80 × 34,271.20
  4. Step 4: Simplify right side
    47,407.60x = 2,438,183,398.56
  5. Step 5: Solve for x
    x = 2,438,183,398.56/47,407.60
  6. Step 6: Final answer
    x = 51,430.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.