Home / 74,820.81-112,252.31-30,479.39

Finding the Fourth Proportional to 74,820.81, 112,252.31 and 30,479.39

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Solution

The fourth proportional to 74,820.81, 112,252.31 and 30,479.39 is: 45,727.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,820.81 : 112,252.31 = 30,479.39 : x
  2. Step 2: Convert to fraction form
    74,820.81/112,252.31 = 30,479.39/x
  3. Step 3: Cross multiply
    74,820.81x = 112,252.31 × 30,479.39
  4. Step 4: Simplify right side
    74,820.81x = 3,421,381,934.89
  5. Step 5: Solve for x
    x = 3,421,381,934.89/74,820.81
  6. Step 6: Final answer
    x = 45,727.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.