Home / 51,917.20-77,962.20-28,560.40

Finding the Fourth Proportional to 51,917.20, 77,962.20 and 28,560.40

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Solution

The fourth proportional to 51,917.20, 77,962.20 and 28,560.40 is: 42,888.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,917.20 : 77,962.20 = 28,560.40 : x
  2. Step 2: Convert to fraction form
    51,917.20/77,962.20 = 28,560.40/x
  3. Step 3: Cross multiply
    51,917.20x = 77,962.20 × 28,560.40
  4. Step 4: Simplify right side
    51,917.20x = 2,226,631,616.88
  5. Step 5: Solve for x
    x = 2,226,631,616.88/51,917.20
  6. Step 6: Final answer
    x = 42,888.13

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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.