Home / 81,000.57-121,518.13-31,080.24

Finding the Fourth Proportional to 81,000.57, 121,518.13 and 31,080.24

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Solution

The fourth proportional to 81,000.57, 121,518.13 and 31,080.24 is: 46,626.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,000.57 : 121,518.13 = 31,080.24 : x
  2. Step 2: Convert to fraction form
    81,000.57/121,518.13 = 31,080.24/x
  3. Step 3: Cross multiply
    81,000.57x = 121,518.13 × 31,080.24
  4. Step 4: Simplify right side
    81,000.57x = 3,776,812,644.75
  5. Step 5: Solve for x
    x = 3,776,812,644.75/81,000.57
  6. Step 6: Final answer
    x = 46,626.99

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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.