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Finding the Fourth Proportional to 74,422.67, 112,130.44 and 67,315.12

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Solution

The fourth proportional to 74,422.67, 112,130.44 and 67,315.12 is: 101,421.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,422.67 : 112,130.44 = 67,315.12 : x
  2. Step 2: Convert to fraction form
    74,422.67/112,130.44 = 67,315.12/x
  3. Step 3: Cross multiply
    74,422.67x = 112,130.44 × 67,315.12
  4. Step 4: Simplify right side
    74,422.67x = 7,548,073,575.64
  5. Step 5: Solve for x
    x = 7,548,073,575.64/74,422.67
  6. Step 6: Final answer
    x = 101,421.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.