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Finding the Fourth Proportional to 71,360.92, 98,483.61 and 39,532.78

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Solution

The fourth proportional to 71,360.92, 98,483.61 and 39,532.78 is: 54,558.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,360.92 : 98,483.61 = 39,532.78 : x
  2. Step 2: Convert to fraction form
    71,360.92/98,483.61 = 39,532.78/x
  3. Step 3: Cross multiply
    71,360.92x = 98,483.61 × 39,532.78
  4. Step 4: Simplify right side
    71,360.92x = 3,893,330,887.74
  5. Step 5: Solve for x
    x = 3,893,330,887.74/71,360.92
  6. Step 6: Final answer
    x = 54,558.31

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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.