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Finding the Fourth Proportional to 84,881.82, 117,144.18 and 47,158.50

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Solution

The fourth proportional to 84,881.82, 117,144.18 and 47,158.50 is: 65,082.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,881.82 : 117,144.18 = 47,158.50 : x
  2. Step 2: Convert to fraction form
    84,881.82/117,144.18 = 47,158.50/x
  3. Step 3: Cross multiply
    84,881.82x = 117,144.18 × 47,158.50
  4. Step 4: Simplify right side
    84,881.82x = 5,524,343,812.53
  5. Step 5: Solve for x
    x = 5,524,343,812.53/84,881.82
  6. Step 6: Final answer
    x = 65,082.77

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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.