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Finding the Fourth Proportional to 74,365.76, 111,540.48 and 21,775.76

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Solution

The fourth proportional to 74,365.76, 111,540.48 and 21,775.76 is: 32,661.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,365.76 : 111,540.48 = 21,775.76 : x
  2. Step 2: Convert to fraction form
    74,365.76/111,540.48 = 21,775.76/x
  3. Step 3: Cross multiply
    74,365.76x = 111,540.48 × 21,775.76
  4. Step 4: Simplify right side
    74,365.76x = 2,428,878,722.76
  5. Step 5: Solve for x
    x = 2,428,878,722.76/74,365.76
  6. Step 6: Final answer
    x = 32,661.25

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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.