Home / 74,771.68-103,184.50-40,779.56

Finding the Fourth Proportional to 74,771.68, 103,184.50 and 40,779.56

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Solution

The fourth proportional to 74,771.68, 103,184.50 and 40,779.56 is: 56,275.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,771.68 : 103,184.50 = 40,779.56 : x
  2. Step 2: Convert to fraction form
    74,771.68/103,184.50 = 40,779.56/x
  3. Step 3: Cross multiply
    74,771.68x = 103,184.50 × 40,779.56
  4. Step 4: Simplify right side
    74,771.68x = 4,207,818,508.82
  5. Step 5: Solve for x
    x = 4,207,818,508.82/74,771.68
  6. Step 6: Final answer
    x = 56,275.56

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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.