Home / 77,280.32-115,927.20-21,876.80

Finding the Fourth Proportional to 77,280.32, 115,927.20 and 21,876.80

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Solution

The fourth proportional to 77,280.32, 115,927.20 and 21,876.80 is: 32,817.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,280.32 : 115,927.20 = 21,876.80 : x
  2. Step 2: Convert to fraction form
    77,280.32/115,927.20 = 21,876.80/x
  3. Step 3: Cross multiply
    77,280.32x = 115,927.20 × 21,876.80
  4. Step 4: Simplify right side
    77,280.32x = 2,536,116,168.96
  5. Step 5: Solve for x
    x = 2,536,116,168.96/77,280.32
  6. Step 6: Final answer
    x = 32,817.10

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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.