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Finding the Fourth Proportional to 85,948.78, 118,609.72 and 47,708.84

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Solution

The fourth proportional to 85,948.78, 118,609.72 and 47,708.84 is: 65,838.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,948.78 : 118,609.72 = 47,708.84 : x
  2. Step 2: Convert to fraction form
    85,948.78/118,609.72 = 47,708.84/x
  3. Step 3: Cross multiply
    85,948.78x = 118,609.72 × 47,708.84
  4. Step 4: Simplify right side
    85,948.78x = 5,658,732,153.92
  5. Step 5: Solve for x
    x = 5,658,732,153.92/85,948.78
  6. Step 6: Final answer
    x = 65,838.42

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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.