Home / 51,388.16-77,095.68-21,807.20

Finding the Fourth Proportional to 51,388.16, 77,095.68 and 21,807.20

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Solution

The fourth proportional to 51,388.16, 77,095.68 and 21,807.20 is: 32,716.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,388.16 : 77,095.68 = 21,807.20 : x
  2. Step 2: Convert to fraction form
    51,388.16/77,095.68 = 21,807.20/x
  3. Step 3: Cross multiply
    51,388.16x = 77,095.68 × 21,807.20
  4. Step 4: Simplify right side
    51,388.16x = 1,681,240,912.90
  5. Step 5: Solve for x
    x = 1,681,240,912.90/51,388.16
  6. Step 6: Final answer
    x = 32,716.50

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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.