Home / 74,820.91-103,249.64-40,828.55

Finding the Fourth Proportional to 74,820.91, 103,249.64 and 40,828.55

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Solution

The fourth proportional to 74,820.91, 103,249.64 and 40,828.55 is: 56,341.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,820.91 : 103,249.64 = 40,828.55 : x
  2. Step 2: Convert to fraction form
    74,820.91/103,249.64 = 40,828.55/x
  3. Step 3: Cross multiply
    74,820.91x = 103,249.64 × 40,828.55
  4. Step 4: Simplify right side
    74,820.91x = 4,215,532,368.83
  5. Step 5: Solve for x
    x = 4,215,532,368.83/74,820.91
  6. Step 6: Final answer
    x = 56,341.64

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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.