Home / 99,890.05-137,852.45-57,448.61

Finding the Fourth Proportional to 99,890.05, 137,852.45 and 57,448.61

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Solution

The fourth proportional to 99,890.05, 137,852.45 and 57,448.61 is: 79,281.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,890.05 : 137,852.45 = 57,448.61 : x
  2. Step 2: Convert to fraction form
    99,890.05/137,852.45 = 57,448.61/x
  3. Step 3: Cross multiply
    99,890.05x = 137,852.45 × 57,448.61
  4. Step 4: Simplify right side
    99,890.05x = 7,919,431,637.59
  5. Step 5: Solve for x
    x = 7,919,431,637.59/99,890.05
  6. Step 6: Final answer
    x = 79,281.49

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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.