Home / 51,643.12-71,260.65-28,981.24

Finding the Fourth Proportional to 51,643.12, 71,260.65 and 28,981.24

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Solution

The fourth proportional to 51,643.12, 71,260.65 and 28,981.24 is: 39,990.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,643.12 : 71,260.65 = 28,981.24 : x
  2. Step 2: Convert to fraction form
    51,643.12/71,260.65 = 28,981.24/x
  3. Step 3: Cross multiply
    51,643.12x = 71,260.65 × 28,981.24
  4. Step 4: Simplify right side
    51,643.12x = 2,065,222,000.21
  5. Step 5: Solve for x
    x = 2,065,222,000.21/51,643.12
  6. Step 6: Final answer
    x = 39,990.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.