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Finding the Fourth Proportional to 74,470.80, 111,708.90 and 21,885.60

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Solution

The fourth proportional to 74,470.80, 111,708.90 and 21,885.60 is: 32,829.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,470.80 : 111,708.90 = 21,885.60 : x
  2. Step 2: Convert to fraction form
    74,470.80/111,708.90 = 21,885.60/x
  3. Step 3: Cross multiply
    74,470.80x = 111,708.90 × 21,885.60
  4. Step 4: Simplify right side
    74,470.80x = 2,444,816,301.84
  5. Step 5: Solve for x
    x = 2,444,816,301.84/74,470.80
  6. Step 6: Final answer
    x = 32,829.19

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1.5x scale

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.