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Finding the Fourth Proportional to 68,779.95, 94,909.77 and 38,558.34

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Solution

The fourth proportional to 68,779.95, 94,909.77 and 38,558.34 is: 53,206.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,779.95 : 94,909.77 = 38,558.34 : x
  2. Step 2: Convert to fraction form
    68,779.95/94,909.77 = 38,558.34/x
  3. Step 3: Cross multiply
    68,779.95x = 94,909.77 × 38,558.34
  4. Step 4: Simplify right side
    68,779.95x = 3,659,563,180.98
  5. Step 5: Solve for x
    x = 3,659,563,180.98/68,779.95
  6. Step 6: Final answer
    x = 53,206.83

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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.