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Finding the Fourth Proportional to 85,583.79, 118,102.23 and 47,340.90

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Solution

The fourth proportional to 85,583.79, 118,102.23 and 47,340.90 is: 65,328.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,583.79 : 118,102.23 = 47,340.90 : x
  2. Step 2: Convert to fraction form
    85,583.79/118,102.23 = 47,340.90/x
  3. Step 3: Cross multiply
    85,583.79x = 118,102.23 × 47,340.90
  4. Step 4: Simplify right side
    85,583.79x = 5,591,065,860.21
  5. Step 5: Solve for x
    x = 5,591,065,860.21/85,583.79
  6. Step 6: Final answer
    x = 65,328.56

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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.