Home / 71,780.24-99,054.65-39,948.45

Finding the Fourth Proportional to 71,780.24, 99,054.65 and 39,948.45

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Solution

The fourth proportional to 71,780.24, 99,054.65 and 39,948.45 is: 55,127.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,780.24 : 99,054.65 = 39,948.45 : x
  2. Step 2: Convert to fraction form
    71,780.24/99,054.65 = 39,948.45/x
  3. Step 3: Cross multiply
    71,780.24x = 99,054.65 × 39,948.45
  4. Step 4: Simplify right side
    71,780.24x = 3,957,079,533.05
  5. Step 5: Solve for x
    x = 3,957,079,533.05/71,780.24
  6. Step 6: Final answer
    x = 55,127.70

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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.