Home / 31,862.80-47,736.60-28,176.40

Finding the Fourth Proportional to 31,862.80, 47,736.60 and 28,176.40

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Solution

The fourth proportional to 31,862.80, 47,736.60 and 28,176.40 is: 42,213.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,862.80 : 47,736.60 = 28,176.40 : x
  2. Step 2: Convert to fraction form
    31,862.80/47,736.60 = 28,176.40/x
  3. Step 3: Cross multiply
    31,862.80x = 47,736.60 × 28,176.40
  4. Step 4: Simplify right side
    31,862.80x = 1,345,045,536.24
  5. Step 5: Solve for x
    x = 1,345,045,536.24/31,862.80
  6. Step 6: Final answer
    x = 42,213.66

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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.