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Finding the Fourth Proportional to 101,488.72, 152,126.13 and 48,786.88

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Solution

The fourth proportional to 101,488.72, 152,126.13 and 48,786.88 is: 73,128.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,488.72 : 152,126.13 = 48,786.88 : x
  2. Step 2: Convert to fraction form
    101,488.72/152,126.13 = 48,786.88/x
  3. Step 3: Cross multiply
    101,488.72x = 152,126.13 × 48,786.88
  4. Step 4: Simplify right side
    101,488.72x = 7,421,759,249.17
  5. Step 5: Solve for x
    x = 7,421,759,249.17/101,488.72
  6. Step 6: Final answer
    x = 73,128.91

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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.