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Finding the Fourth Proportional to 73,876.40, 103,689.40 and 73,876.40

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Solution

The fourth proportional to 73,876.40, 103,689.40 and 73,876.40 is: 103,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,876.40 : 103,689.40 = 73,876.40 : x
  2. Step 2: Convert to fraction form
    73,876.40/103,689.40 = 73,876.40/x
  3. Step 3: Cross multiply
    73,876.40x = 103,689.40 × 73,876.40
  4. Step 4: Simplify right side
    73,876.40x = 7,660,199,590.16
  5. Step 5: Solve for x
    x = 7,660,199,590.16/73,876.40
  6. Step 6: Final answer
    x = 103,689.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.