Home / 85,531.78-118,037.46-47,806

Finding the Fourth Proportional to 85,531.78, 118,037.46 and 47,806

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Solution

The fourth proportional to 85,531.78, 118,037.46 and 47,806 is: 65,974.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,531.78 : 118,037.46 = 47,806 : x
  2. Step 2: Convert to fraction form
    85,531.78/118,037.46 = 47,806/x
  3. Step 3: Cross multiply
    85,531.78x = 118,037.46 × 47,806
  4. Step 4: Simplify right side
    85,531.78x = 5,642,898,812.76
  5. Step 5: Solve for x
    x = 5,642,898,812.76/85,531.78
  6. Step 6: Final answer
    x = 65,974.29

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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.