Home / 74,890.40-112,304.36-30,487

Finding the Fourth Proportional to 74,890.40, 112,304.36 and 30,487

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Solution

The fourth proportional to 74,890.40, 112,304.36 and 30,487 is: 45,717.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,890.40 : 112,304.36 = 30,487 : x
  2. Step 2: Convert to fraction form
    74,890.40/112,304.36 = 30,487/x
  3. Step 3: Cross multiply
    74,890.40x = 112,304.36 × 30,487
  4. Step 4: Simplify right side
    74,890.40x = 3,423,823,023.32
  5. Step 5: Solve for x
    x = 3,423,823,023.32/74,890.40
  6. Step 6: Final answer
    x = 45,717.78

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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.