Home / 63,669.97-87,865.08-39,810.47

Finding the Fourth Proportional to 63,669.97, 87,865.08 and 39,810.47

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Solution

The fourth proportional to 63,669.97, 87,865.08 and 39,810.47 is: 54,938.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,669.97 : 87,865.08 = 39,810.47 : x
  2. Step 2: Convert to fraction form
    63,669.97/87,865.08 = 39,810.47/x
  3. Step 3: Cross multiply
    63,669.97x = 87,865.08 × 39,810.47
  4. Step 4: Simplify right side
    63,669.97x = 3,497,950,201.76
  5. Step 5: Solve for x
    x = 3,497,950,201.76/63,669.97
  6. Step 6: Final answer
    x = 54,938.78

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1.5x scale

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.