Home / 48,128.26-71,712.70-42,890.80

Finding the Fourth Proportional to 48,128.26, 71,712.70 and 42,890.80

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Solution

The fourth proportional to 48,128.26, 71,712.70 and 42,890.80 is: 63,908.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,128.26 : 71,712.70 = 42,890.80 : x
  2. Step 2: Convert to fraction form
    48,128.26/71,712.70 = 42,890.80/x
  3. Step 3: Cross multiply
    48,128.26x = 71,712.70 × 42,890.80
  4. Step 4: Simplify right side
    48,128.26x = 3,075,815,073.16
  5. Step 5: Solve for x
    x = 3,075,815,073.16/48,128.26
  6. Step 6: Final answer
    x = 63,908.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.