Home / 51,352.16-70,866.45-30,131.78

Finding the Fourth Proportional to 51,352.16, 70,866.45 and 30,131.78

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Solution

The fourth proportional to 51,352.16, 70,866.45 and 30,131.78 is: 41,582.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,352.16 : 70,866.45 = 30,131.78 : x
  2. Step 2: Convert to fraction form
    51,352.16/70,866.45 = 30,131.78/x
  3. Step 3: Cross multiply
    51,352.16x = 70,866.45 × 30,131.78
  4. Step 4: Simplify right side
    51,352.16x = 2,135,332,280.78
  5. Step 5: Solve for x
    x = 2,135,332,280.78/51,352.16
  6. Step 6: Final answer
    x = 41,582.13

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1.5x scale

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.