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Finding the Fourth Proportional to 28,814.40, 43,124.40 and 25,315.20

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Solution

The fourth proportional to 28,814.40, 43,124.40 and 25,315.20 is: 37,887.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,814.40 : 43,124.40 = 25,315.20 : x
  2. Step 2: Convert to fraction form
    28,814.40/43,124.40 = 25,315.20/x
  3. Step 3: Cross multiply
    28,814.40x = 43,124.40 × 25,315.20
  4. Step 4: Simplify right side
    28,814.40x = 1,091,702,810.88
  5. Step 5: Solve for x
    x = 1,091,702,810.88/28,814.40
  6. Step 6: Final answer
    x = 37,887.40

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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.