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Finding the Fourth Proportional to 90,740.62, 136,138.62 and 46,398.52

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Solution

The fourth proportional to 90,740.62, 136,138.62 and 46,398.52 is: 69,611.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,740.62 : 136,138.62 = 46,398.52 : x
  2. Step 2: Convert to fraction form
    90,740.62/136,138.62 = 46,398.52/x
  3. Step 3: Cross multiply
    90,740.62x = 136,138.62 × 46,398.52
  4. Step 4: Simplify right side
    90,740.62x = 6,316,630,142.50
  5. Step 5: Solve for x
    x = 6,316,630,142.50/90,740.62
  6. Step 6: Final answer
    x = 69,611.94

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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.