Home / 85,914.68-118,292.82-78,041.48

Finding the Fourth Proportional to 85,914.68, 118,292.82 and 78,041.48

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Solution

The fourth proportional to 85,914.68, 118,292.82 and 78,041.48 is: 107,452.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,914.68 : 118,292.82 = 78,041.48 : x
  2. Step 2: Convert to fraction form
    85,914.68/118,292.82 = 78,041.48/x
  3. Step 3: Cross multiply
    85,914.68x = 118,292.82 × 78,041.48
  4. Step 4: Simplify right side
    85,914.68x = 9,231,746,746.17
  5. Step 5: Solve for x
    x = 9,231,746,746.17/85,914.68
  6. Step 6: Final answer
    x = 107,452.50

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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.