Home / 74,335.40-111,632.70-72,002.60

Finding the Fourth Proportional to 74,335.40, 111,632.70 and 72,002.60

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Solution

The fourth proportional to 74,335.40, 111,632.70 and 72,002.60 is: 108,129.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,335.40 : 111,632.70 = 72,002.60 : x
  2. Step 2: Convert to fraction form
    74,335.40/111,632.70 = 72,002.60/x
  3. Step 3: Cross multiply
    74,335.40x = 111,632.70 × 72,002.60
  4. Step 4: Simplify right side
    74,335.40x = 8,037,844,645.02
  5. Step 5: Solve for x
    x = 8,037,844,645.02/74,335.40
  6. Step 6: Final answer
    x = 108,129.43

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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.