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Finding the Fourth Proportional to 99,676.80, 137,548.80 and 61,950.24

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Solution

The fourth proportional to 99,676.80, 137,548.80 and 61,950.24 is: 85,488.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,676.80 : 137,548.80 = 61,950.24 : x
  2. Step 2: Convert to fraction form
    99,676.80/137,548.80 = 61,950.24/x
  3. Step 3: Cross multiply
    99,676.80x = 137,548.80 × 61,950.24
  4. Step 4: Simplify right side
    99,676.80x = 8,521,181,171.71
  5. Step 5: Solve for x
    x = 8,521,181,171.71/99,676.80
  6. Step 6: Final answer
    x = 85,488.11

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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.