Home / 74,770.95-103,182.66-40,779.72

Finding the Fourth Proportional to 74,770.95, 103,182.66 and 40,779.72

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Solution

The fourth proportional to 74,770.95, 103,182.66 and 40,779.72 is: 56,275.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,770.95 : 103,182.66 = 40,779.72 : x
  2. Step 2: Convert to fraction form
    74,770.95/103,182.66 = 40,779.72/x
  3. Step 3: Cross multiply
    74,770.95x = 103,182.66 × 40,779.72
  4. Step 4: Simplify right side
    74,770.95x = 4,207,759,983.66
  5. Step 5: Solve for x
    x = 4,207,759,983.66/74,770.95
  6. Step 6: Final answer
    x = 56,275.33

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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.