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Finding the Fourth Proportional to 90,702.62, 136,057 and 34,534.32

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Solution

The fourth proportional to 90,702.62, 136,057 and 34,534.32 is: 51,802.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,702.62 : 136,057 = 34,534.32 : x
  2. Step 2: Convert to fraction form
    90,702.62/136,057 = 34,534.32/x
  3. Step 3: Cross multiply
    90,702.62x = 136,057 × 34,534.32
  4. Step 4: Simplify right side
    90,702.62x = 4,698,635,976.24
  5. Step 5: Solve for x
    x = 4,698,635,976.24/90,702.62
  6. Step 6: Final answer
    x = 51,802.65

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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.