Home / 51,138.13-70,569.30-49,629.10

Finding the Fourth Proportional to 51,138.13, 70,569.30 and 49,629.10

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Solution

The fourth proportional to 51,138.13, 70,569.30 and 49,629.10 is: 68,486.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,138.13 : 70,569.30 = 49,629.10 : x
  2. Step 2: Convert to fraction form
    51,138.13/70,569.30 = 49,629.10/x
  3. Step 3: Cross multiply
    51,138.13x = 70,569.30 × 49,629.10
  4. Step 4: Simplify right side
    51,138.13x = 3,502,290,856.32
  5. Step 5: Solve for x
    x = 3,502,290,856.32/51,138.13
  6. Step 6: Final answer
    x = 68,486.88

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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.