Home / 85,780.82-118,349.19-51,776.39

Finding the Fourth Proportional to 85,780.82, 118,349.19 and 51,776.39

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Solution

The fourth proportional to 85,780.82, 118,349.19 and 51,776.39 is: 71,434.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,780.82 : 118,349.19 = 51,776.39 : x
  2. Step 2: Convert to fraction form
    85,780.82/118,349.19 = 51,776.39/x
  3. Step 3: Cross multiply
    85,780.82x = 118,349.19 × 51,776.39
  4. Step 4: Simplify right side
    85,780.82x = 6,127,694,113.50
  5. Step 5: Solve for x
    x = 6,127,694,113.50/85,780.82
  6. Step 6: Final answer
    x = 71,434.31

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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.