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Finding the Fourth Proportional to 71,475.48, 98,627.76 and 39,636.54

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Solution

The fourth proportional to 71,475.48, 98,627.76 and 39,636.54 is: 54,693.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,475.48 : 98,627.76 = 39,636.54 : x
  2. Step 2: Convert to fraction form
    71,475.48/98,627.76 = 39,636.54/x
  3. Step 3: Cross multiply
    71,475.48x = 98,627.76 × 39,636.54
  4. Step 4: Simplify right side
    71,475.48x = 3,909,263,154.35
  5. Step 5: Solve for x
    x = 3,909,263,154.35/71,475.48
  6. Step 6: Final answer
    x = 54,693.77

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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.