Home / 85,771.42-118,275.33-67,838.02

Finding the Fourth Proportional to 85,771.42, 118,275.33 and 67,838.02

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Solution

The fourth proportional to 85,771.42, 118,275.33 and 67,838.02 is: 93,545.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,771.42 : 118,275.33 = 67,838.02 : x
  2. Step 2: Convert to fraction form
    85,771.42/118,275.33 = 67,838.02/x
  3. Step 3: Cross multiply
    85,771.42x = 118,275.33 × 67,838.02
  4. Step 4: Simplify right side
    85,771.42x = 8,023,564,202.05
  5. Step 5: Solve for x
    x = 8,023,564,202.05/85,771.42
  6. Step 6: Final answer
    x = 93,545.89

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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.