Home / 99,984.70-137,983.05-57,543.34

Finding the Fourth Proportional to 99,984.70, 137,983.05 and 57,543.34

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Solution

The fourth proportional to 99,984.70, 137,983.05 and 57,543.34 is: 79,412.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,984.70 : 137,983.05 = 57,543.34 : x
  2. Step 2: Convert to fraction form
    99,984.70/137,983.05 = 57,543.34/x
  3. Step 3: Cross multiply
    99,984.70x = 137,983.05 × 57,543.34
  4. Step 4: Simplify right side
    99,984.70x = 7,940,005,560.39
  5. Step 5: Solve for x
    x = 7,940,005,560.39/99,984.70
  6. Step 6: Final answer
    x = 79,412.21

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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.