Home / 85,919.87-118,566.32-47,681.09

Finding the Fourth Proportional to 85,919.87, 118,566.32 and 47,681.09

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Solution

The fourth proportional to 85,919.87, 118,566.32 and 47,681.09 is: 65,798.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,919.87 : 118,566.32 = 47,681.09 : x
  2. Step 2: Convert to fraction form
    85,919.87/118,566.32 = 47,681.09/x
  3. Step 3: Cross multiply
    85,919.87x = 118,566.32 × 47,681.09
  4. Step 4: Simplify right side
    85,919.87x = 5,653,370,543.65
  5. Step 5: Solve for x
    x = 5,653,370,543.65/85,919.87
  6. Step 6: Final answer
    x = 65,798.18

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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.