Home / 78,890.80-108,877.86-48,675.34

Finding the Fourth Proportional to 78,890.80, 108,877.86 and 48,675.34

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Solution

The fourth proportional to 78,890.80, 108,877.86 and 48,675.34 is: 67,177.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,890.80 : 108,877.86 = 48,675.34 : x
  2. Step 2: Convert to fraction form
    78,890.80/108,877.86 = 48,675.34/x
  3. Step 3: Cross multiply
    78,890.80x = 108,877.86 × 48,675.34
  4. Step 4: Simplify right side
    78,890.80x = 5,299,666,853.97
  5. Step 5: Solve for x
    x = 5,299,666,853.97/78,890.80
  6. Step 6: Final answer
    x = 67,177.25

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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.