Home / 51,898.12-71,620.19-30,679.36

Finding the Fourth Proportional to 51,898.12, 71,620.19 and 30,679.36

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Solution

The fourth proportional to 51,898.12, 71,620.19 and 30,679.36 is: 42,337.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,898.12 : 71,620.19 = 30,679.36 : x
  2. Step 2: Convert to fraction form
    51,898.12/71,620.19 = 30,679.36/x
  3. Step 3: Cross multiply
    51,898.12x = 71,620.19 × 30,679.36
  4. Step 4: Simplify right side
    51,898.12x = 2,197,261,592.28
  5. Step 5: Solve for x
    x = 2,197,261,592.28/51,898.12
  6. Step 6: Final answer
    x = 42,337.98

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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.