Home / 51,415.16-77,122.59-18,127.20

Finding the Fourth Proportional to 51,415.16, 77,122.59 and 18,127.20

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Solution

The fourth proportional to 51,415.16, 77,122.59 and 18,127.20 is: 27,190.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,415.16 : 77,122.59 = 18,127.20 : x
  2. Step 2: Convert to fraction form
    51,415.16/77,122.59 = 18,127.20/x
  3. Step 3: Cross multiply
    51,415.16x = 77,122.59 × 18,127.20
  4. Step 4: Simplify right side
    51,415.16x = 1,398,016,451.85
  5. Step 5: Solve for x
    x = 1,398,016,451.85/51,415.16
  6. Step 6: Final answer
    x = 27,190.74

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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.