Home / 85,981.11-118,657.62-47,740.65

Finding the Fourth Proportional to 85,981.11, 118,657.62 and 47,740.65

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Solution

The fourth proportional to 85,981.11, 118,657.62 and 47,740.65 is: 65,884.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,981.11 : 118,657.62 = 47,740.65 : x
  2. Step 2: Convert to fraction form
    85,981.11/118,657.62 = 47,740.65/x
  3. Step 3: Cross multiply
    85,981.11x = 118,657.62 × 47,740.65
  4. Step 4: Simplify right side
    85,981.11x = 5,664,791,906.25
  5. Step 5: Solve for x
    x = 5,664,791,906.25/85,981.11
  6. Step 6: Final answer
    x = 65,884.14

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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.