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Finding the Fourth Proportional to 60,090.90, 90,151.11 and 20,648.58

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Solution

The fourth proportional to 60,090.90, 90,151.11 and 20,648.58 is: 30,977.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,090.90 : 90,151.11 = 20,648.58 : x
  2. Step 2: Convert to fraction form
    60,090.90/90,151.11 = 20,648.58/x
  3. Step 3: Cross multiply
    60,090.90x = 90,151.11 × 20,648.58
  4. Step 4: Simplify right side
    60,090.90x = 1,861,492,406.92
  5. Step 5: Solve for x
    x = 1,861,492,406.92/60,090.90
  6. Step 6: Final answer
    x = 30,977.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.