Home / 51,115.76-70,539.20-28,454.40

Finding the Fourth Proportional to 51,115.76, 70,539.20 and 28,454.40

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Solution

The fourth proportional to 51,115.76, 70,539.20 and 28,454.40 is: 39,266.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,115.76 : 70,539.20 = 28,454.40 : x
  2. Step 2: Convert to fraction form
    51,115.76/70,539.20 = 28,454.40/x
  3. Step 3: Cross multiply
    51,115.76x = 70,539.20 × 28,454.40
  4. Step 4: Simplify right side
    51,115.76x = 2,007,150,612.48
  5. Step 5: Solve for x
    x = 2,007,150,612.48/51,115.76
  6. Step 6: Final answer
    x = 39,266.77

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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.