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Finding the Fourth Proportional to 60,891.28, 91,210.36 and 31,219.28

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Solution

The fourth proportional to 60,891.28, 91,210.36 and 31,219.28 is: 46,764.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,891.28 : 91,210.36 = 31,219.28 : x
  2. Step 2: Convert to fraction form
    60,891.28/91,210.36 = 31,219.28/x
  3. Step 3: Cross multiply
    60,891.28x = 91,210.36 × 31,219.28
  4. Step 4: Simplify right side
    60,891.28x = 2,847,521,767.74
  5. Step 5: Solve for x
    x = 2,847,521,767.74/60,891.28
  6. Step 6: Final answer
    x = 46,764.03

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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.