Home / 74,890.90-112,305.11-30,487.50

Finding the Fourth Proportional to 74,890.90, 112,305.11 and 30,487.50

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Solution

The fourth proportional to 74,890.90, 112,305.11 and 30,487.50 is: 45,718.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,890.90 : 112,305.11 = 30,487.50 : x
  2. Step 2: Convert to fraction form
    74,890.90/112,305.11 = 30,487.50/x
  3. Step 3: Cross multiply
    74,890.90x = 112,305.11 × 30,487.50
  4. Step 4: Simplify right side
    74,890.90x = 3,423,902,041.13
  5. Step 5: Solve for x
    x = 3,423,902,041.13/74,890.90
  6. Step 6: Final answer
    x = 45,718.53

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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.