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Finding the Fourth Proportional to 107,670.62, 161,512.41 and 45,345.98

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Solution

The fourth proportional to 107,670.62, 161,512.41 and 45,345.98 is: 68,021.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,670.62 : 161,512.41 = 45,345.98 : x
  2. Step 2: Convert to fraction form
    107,670.62/161,512.41 = 45,345.98/x
  3. Step 3: Cross multiply
    107,670.62x = 161,512.41 × 45,345.98
  4. Step 4: Simplify right side
    107,670.62x = 7,323,938,513.61
  5. Step 5: Solve for x
    x = 7,323,938,513.61/107,670.62
  6. Step 6: Final answer
    x = 68,021.70

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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.