Home / 99,424.77-137,212.10-56,986.03

Finding the Fourth Proportional to 99,424.77, 137,212.10 and 56,986.03

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Solution

The fourth proportional to 99,424.77, 137,212.10 and 56,986.03 is: 78,644.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,424.77 : 137,212.10 = 56,986.03 : x
  2. Step 2: Convert to fraction form
    99,424.77/137,212.10 = 56,986.03/x
  3. Step 3: Cross multiply
    99,424.77x = 137,212.10 × 56,986.03
  4. Step 4: Simplify right side
    99,424.77x = 7,819,172,846.96
  5. Step 5: Solve for x
    x = 7,819,172,846.96/99,424.77
  6. Step 6: Final answer
    x = 78,644.11

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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.