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Finding the Fourth Proportional to 43,411.76, 65,117.72 and 15,703.28

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Solution

The fourth proportional to 43,411.76, 65,117.72 and 15,703.28 is: 23,554.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,411.76 : 65,117.72 = 15,703.28 : x
  2. Step 2: Convert to fraction form
    43,411.76/65,117.72 = 15,703.28/x
  3. Step 3: Cross multiply
    43,411.76x = 65,117.72 × 15,703.28
  4. Step 4: Simplify right side
    43,411.76x = 1,022,561,790.12
  5. Step 5: Solve for x
    x = 1,022,561,790.12/43,411.76
  6. Step 6: Final answer
    x = 23,554.95

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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.