Home / 85,860.12-118,475.68-47,619.21

Finding the Fourth Proportional to 85,860.12, 118,475.68 and 47,619.21

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Solution

The fourth proportional to 85,860.12, 118,475.68 and 47,619.21 is: 65,708.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,860.12 : 118,475.68 = 47,619.21 : x
  2. Step 2: Convert to fraction form
    85,860.12/118,475.68 = 47,619.21/x
  3. Step 3: Cross multiply
    85,860.12x = 118,475.68 × 47,619.21
  4. Step 4: Simplify right side
    85,860.12x = 5,641,718,285.81
  5. Step 5: Solve for x
    x = 5,641,718,285.81/85,860.12
  6. Step 6: Final answer
    x = 65,708.25

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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.