Home / 84,017.04-126,027.72-28,651.92

Finding the Fourth Proportional to 84,017.04, 126,027.72 and 28,651.92

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Solution

The fourth proportional to 84,017.04, 126,027.72 and 28,651.92 is: 42,978.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,017.04 : 126,027.72 = 28,651.92 : x
  2. Step 2: Convert to fraction form
    84,017.04/126,027.72 = 28,651.92/x
  3. Step 3: Cross multiply
    84,017.04x = 126,027.72 × 28,651.92
  4. Step 4: Simplify right side
    84,017.04x = 3,610,936,151.22
  5. Step 5: Solve for x
    x = 3,610,936,151.22/84,017.04
  6. Step 6: Final answer
    x = 42,978.62

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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.