Home / 63,770.17-87,979.07-39,887.77

Finding the Fourth Proportional to 63,770.17, 87,979.07 and 39,887.77

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Solution

The fourth proportional to 63,770.17, 87,979.07 and 39,887.77 is: 55,030.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,770.17 : 87,979.07 = 39,887.77 : x
  2. Step 2: Convert to fraction form
    63,770.17/87,979.07 = 39,887.77/x
  3. Step 3: Cross multiply
    63,770.17x = 87,979.07 × 39,887.77
  4. Step 4: Simplify right side
    63,770.17x = 3,509,288,709.54
  5. Step 5: Solve for x
    x = 3,509,288,709.54/63,770.17
  6. Step 6: Final answer
    x = 55,030.25

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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.