Home / 74,956.80-112,435.20-28,220.16

Finding the Fourth Proportional to 74,956.80, 112,435.20 and 28,220.16

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Solution

The fourth proportional to 74,956.80, 112,435.20 and 28,220.16 is: 42,330.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,956.80 : 112,435.20 = 28,220.16 : x
  2. Step 2: Convert to fraction form
    74,956.80/112,435.20 = 28,220.16/x
  3. Step 3: Cross multiply
    74,956.80x = 112,435.20 × 28,220.16
  4. Step 4: Simplify right side
    74,956.80x = 3,172,939,333.63
  5. Step 5: Solve for x
    x = 3,172,939,333.63/74,956.80
  6. Step 6: Final answer
    x = 42,330.24

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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.