Home / 74,520.32-111,782.40-21,931.52

Finding the Fourth Proportional to 74,520.32, 111,782.40 and 21,931.52

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Solution

The fourth proportional to 74,520.32, 111,782.40 and 21,931.52 is: 32,897.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,520.32 : 111,782.40 = 21,931.52 : x
  2. Step 2: Convert to fraction form
    74,520.32/111,782.40 = 21,931.52/x
  3. Step 3: Cross multiply
    74,520.32x = 111,782.40 × 21,931.52
  4. Step 4: Simplify right side
    74,520.32x = 2,451,557,941.25
  5. Step 5: Solve for x
    x = 2,451,557,941.25/74,520.32
  6. Step 6: Final answer
    x = 32,897.85

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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.