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Finding the Fourth Proportional to 64,470.48, 88,945.20 and 49,347.60

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Solution

The fourth proportional to 64,470.48, 88,945.20 and 49,347.60 is: 68,081.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,470.48 : 88,945.20 = 49,347.60 : x
  2. Step 2: Convert to fraction form
    64,470.48/88,945.20 = 49,347.60/x
  3. Step 3: Cross multiply
    64,470.48x = 88,945.20 × 49,347.60
  4. Step 4: Simplify right side
    64,470.48x = 4,389,232,151.52
  5. Step 5: Solve for x
    x = 4,389,232,151.52/64,470.48
  6. Step 6: Final answer
    x = 68,081.27

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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.