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Finding the Fourth Proportional to 145,292.72, 217,830.84 and 61,077.52

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Solution

The fourth proportional to 145,292.72, 217,830.84 and 61,077.52 is: 91,570.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,292.72 : 217,830.84 = 61,077.52 : x
  2. Step 2: Convert to fraction form
    145,292.72/217,830.84 = 61,077.52/x
  3. Step 3: Cross multiply
    145,292.72x = 217,830.84 × 61,077.52
  4. Step 4: Simplify right side
    145,292.72x = 13,304,567,486.72
  5. Step 5: Solve for x
    x = 13,304,567,486.72/145,292.72
  6. Step 6: Final answer
    x = 91,570.78

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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.