Home / 51,451.12-71,002.80-28,790.16

Finding the Fourth Proportional to 51,451.12, 71,002.80 and 28,790.16

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Solution

The fourth proportional to 51,451.12, 71,002.80 and 28,790.16 is: 39,730.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,451.12 : 71,002.80 = 28,790.16 : x
  2. Step 2: Convert to fraction form
    51,451.12/71,002.80 = 28,790.16/x
  3. Step 3: Cross multiply
    51,451.12x = 71,002.80 × 28,790.16
  4. Step 4: Simplify right side
    51,451.12x = 2,044,181,972.45
  5. Step 5: Solve for x
    x = 2,044,181,972.45/51,451.12
  6. Step 6: Final answer
    x = 39,730.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.