Home / 74,972.16-112,445.28-28,216.80

Finding the Fourth Proportional to 74,972.16, 112,445.28 and 28,216.80

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Solution

The fourth proportional to 74,972.16, 112,445.28 and 28,216.80 is: 42,320.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,972.16 : 112,445.28 = 28,216.80 : x
  2. Step 2: Convert to fraction form
    74,972.16/112,445.28 = 28,216.80/x
  3. Step 3: Cross multiply
    74,972.16x = 112,445.28 × 28,216.80
  4. Step 4: Simplify right side
    74,972.16x = 3,172,845,976.70
  5. Step 5: Solve for x
    x = 3,172,845,976.70/74,972.16
  6. Step 6: Final answer
    x = 42,320.32

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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.