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Finding the Fourth Proportional to 63,138.80, 94,631.40 and 28,041.20

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Solution

The fourth proportional to 63,138.80, 94,631.40 and 28,041.20 is: 42,027.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,138.80 : 94,631.40 = 28,041.20 : x
  2. Step 2: Convert to fraction form
    63,138.80/94,631.40 = 28,041.20/x
  3. Step 3: Cross multiply
    63,138.80x = 94,631.40 × 28,041.20
  4. Step 4: Simplify right side
    63,138.80x = 2,653,578,013.68
  5. Step 5: Solve for x
    x = 2,653,578,013.68/63,138.80
  6. Step 6: Final answer
    x = 42,027.69

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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.