Home / 85,506.44-117,998.70-47,780.69

Finding the Fourth Proportional to 85,506.44, 117,998.70 and 47,780.69

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Solution

The fourth proportional to 85,506.44, 117,998.70 and 47,780.69 is: 65,937.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,506.44 : 117,998.70 = 47,780.69 : x
  2. Step 2: Convert to fraction form
    85,506.44/117,998.70 = 47,780.69/x
  3. Step 3: Cross multiply
    85,506.44x = 117,998.70 × 47,780.69
  4. Step 4: Simplify right side
    85,506.44x = 5,638,059,305.10
  5. Step 5: Solve for x
    x = 5,638,059,305.10/85,506.44
  6. Step 6: Final answer
    x = 65,937.25

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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.