Home / 40,920.16-61,300.08-21,211.72

Finding the Fourth Proportional to 40,920.16, 61,300.08 and 21,211.72

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Solution

The fourth proportional to 40,920.16, 61,300.08 and 21,211.72 is: 31,776.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,920.16 : 61,300.08 = 21,211.72 : x
  2. Step 2: Convert to fraction form
    40,920.16/61,300.08 = 21,211.72/x
  3. Step 3: Cross multiply
    40,920.16x = 61,300.08 × 21,211.72
  4. Step 4: Simplify right side
    40,920.16x = 1,300,280,132.94
  5. Step 5: Solve for x
    x = 1,300,280,132.94/40,920.16
  6. Step 6: Final answer
    x = 31,776.03

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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.