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Finding the Fourth Proportional to 71,347.20, 98,401.92 and 44,438.40

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Solution

The fourth proportional to 71,347.20, 98,401.92 and 44,438.40 is: 61,289.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,347.20 : 98,401.92 = 44,438.40 : x
  2. Step 2: Convert to fraction form
    71,347.20/98,401.92 = 44,438.40/x
  3. Step 3: Cross multiply
    71,347.20x = 98,401.92 × 44,438.40
  4. Step 4: Simplify right side
    71,347.20x = 4,372,823,881.73
  5. Step 5: Solve for x
    x = 4,372,823,881.73/71,347.20
  6. Step 6: Final answer
    x = 61,289.36

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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.