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Finding the Fourth Proportional to 85,595.81, 118,082.37 and 55,390.87

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Solution

The fourth proportional to 85,595.81, 118,082.37 and 55,390.87 is: 76,413.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,595.81 : 118,082.37 = 55,390.87 : x
  2. Step 2: Convert to fraction form
    85,595.81/118,082.37 = 55,390.87/x
  3. Step 3: Cross multiply
    85,595.81x = 118,082.37 × 55,390.87
  4. Step 4: Simplify right side
    85,595.81x = 6,540,685,561.28
  5. Step 5: Solve for x
    x = 6,540,685,561.28/85,595.81
  6. Step 6: Final answer
    x = 76,413.62

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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.