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Finding the Fourth Proportional to 86,146.70, 118,882.40 and 48,420.94

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Solution

The fourth proportional to 86,146.70, 118,882.40 and 48,420.94 is: 66,820.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,146.70 : 118,882.40 = 48,420.94 : x
  2. Step 2: Convert to fraction form
    86,146.70/118,882.40 = 48,420.94/x
  3. Step 3: Cross multiply
    86,146.70x = 118,882.40 × 48,420.94
  4. Step 4: Simplify right side
    86,146.70x = 5,756,397,557.46
  5. Step 5: Solve for x
    x = 5,756,397,557.46/86,146.70
  6. Step 6: Final answer
    x = 66,820.87

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1.5x scale

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.