Home / 85,605.16-118,139.70-47,872.84

Finding the Fourth Proportional to 85,605.16, 118,139.70 and 47,872.84

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Solution

The fourth proportional to 85,605.16, 118,139.70 and 47,872.84 is: 66,067.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,605.16 : 118,139.70 = 47,872.84 : x
  2. Step 2: Convert to fraction form
    85,605.16/118,139.70 = 47,872.84/x
  3. Step 3: Cross multiply
    85,605.16x = 118,139.70 × 47,872.84
  4. Step 4: Simplify right side
    85,605.16x = 5,655,682,955.75
  5. Step 5: Solve for x
    x = 5,655,682,955.75/85,605.16
  6. Step 6: Final answer
    x = 66,067.08

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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.