Home / 51,645.20-71,285.68-30,431.28

Finding the Fourth Proportional to 51,645.20, 71,285.68 and 30,431.28

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Solution

The fourth proportional to 51,645.20, 71,285.68 and 30,431.28 is: 42,004.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,645.20 : 71,285.68 = 30,431.28 : x
  2. Step 2: Convert to fraction form
    51,645.20/71,285.68 = 30,431.28/x
  3. Step 3: Cross multiply
    51,645.20x = 71,285.68 × 30,431.28
  4. Step 4: Simplify right side
    51,645.20x = 2,169,314,488.07
  5. Step 5: Solve for x
    x = 2,169,314,488.07/51,645.20
  6. Step 6: Final answer
    x = 42,004.18

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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.