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Finding the Fourth Proportional to 88,430.90, 122,115.69 and 56,175.90

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Solution

The fourth proportional to 88,430.90, 122,115.69 and 56,175.90 is: 77,574.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,430.90 : 122,115.69 = 56,175.90 : x
  2. Step 2: Convert to fraction form
    88,430.90/122,115.69 = 56,175.90/x
  3. Step 3: Cross multiply
    88,430.90x = 122,115.69 × 56,175.90
  4. Step 4: Simplify right side
    88,430.90x = 6,859,958,789.87
  5. Step 5: Solve for x
    x = 6,859,958,789.87/88,430.90
  6. Step 6: Final answer
    x = 77,574.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.