Home / 85,587.12-118,107-47,860.56

Finding the Fourth Proportional to 85,587.12, 118,107 and 47,860.56

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Solution

The fourth proportional to 85,587.12, 118,107 and 47,860.56 is: 66,045.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,587.12 : 118,107 = 47,860.56 : x
  2. Step 2: Convert to fraction form
    85,587.12/118,107 = 47,860.56/x
  3. Step 3: Cross multiply
    85,587.12x = 118,107 × 47,860.56
  4. Step 4: Simplify right side
    85,587.12x = 5,652,667,159.92
  5. Step 5: Solve for x
    x = 5,652,667,159.92/85,587.12
  6. Step 6: Final answer
    x = 66,045.77

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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.