Home / 99,306.40-137,043.72-53,984.47

Finding the Fourth Proportional to 99,306.40, 137,043.72 and 53,984.47

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Solution

The fourth proportional to 99,306.40, 137,043.72 and 53,984.47 is: 74,499.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,306.40 : 137,043.72 = 53,984.47 : x
  2. Step 2: Convert to fraction form
    99,306.40/137,043.72 = 53,984.47/x
  3. Step 3: Cross multiply
    99,306.40x = 137,043.72 × 53,984.47
  4. Step 4: Simplify right side
    99,306.40x = 7,398,231,703.37
  5. Step 5: Solve for x
    x = 7,398,231,703.37/99,306.40
  6. Step 6: Final answer
    x = 74,499.05

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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.