Home / 74,756.08-112,152.12-28,009.36

Finding the Fourth Proportional to 74,756.08, 112,152.12 and 28,009.36

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Solution

The fourth proportional to 74,756.08, 112,152.12 and 28,009.36 is: 42,020.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,756.08 : 112,152.12 = 28,009.36 : x
  2. Step 2: Convert to fraction form
    74,756.08/112,152.12 = 28,009.36/x
  3. Step 3: Cross multiply
    74,756.08x = 112,152.12 × 28,009.36
  4. Step 4: Simplify right side
    74,756.08x = 3,141,309,103.84
  5. Step 5: Solve for x
    x = 3,141,309,103.84/74,756.08
  6. Step 6: Final answer
    x = 42,020.78

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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.