Home / 85,075.08-127,631.83-28,148.87

Finding the Fourth Proportional to 85,075.08, 127,631.83 and 28,148.87

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Solution

The fourth proportional to 85,075.08, 127,631.83 and 28,148.87 is: 42,229.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,075.08 : 127,631.83 = 28,148.87 : x
  2. Step 2: Convert to fraction form
    85,075.08/127,631.83 = 28,148.87/x
  3. Step 3: Cross multiply
    85,075.08x = 127,631.83 × 28,148.87
  4. Step 4: Simplify right side
    85,075.08x = 3,592,691,294.92
  5. Step 5: Solve for x
    x = 3,592,691,294.92/85,075.08
  6. Step 6: Final answer
    x = 42,229.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.