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Finding the Fourth Proportional to 28,988.88, 43,223.67 and 28,464

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Solution

The fourth proportional to 28,988.88, 43,223.67 and 28,464 is: 42,441.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,988.88 : 43,223.67 = 28,464 : x
  2. Step 2: Convert to fraction form
    28,988.88/43,223.67 = 28,464/x
  3. Step 3: Cross multiply
    28,988.88x = 43,223.67 × 28,464
  4. Step 4: Simplify right side
    28,988.88x = 1,230,318,542.88
  5. Step 5: Solve for x
    x = 1,230,318,542.88/28,988.88
  6. Step 6: Final answer
    x = 42,441.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.