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Finding the Fourth Proportional to 40,465.80, 60,710.60 and 20,758.12

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Solution

The fourth proportional to 40,465.80, 60,710.60 and 20,758.12 is: 31,143.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,465.80 : 60,710.60 = 20,758.12 : x
  2. Step 2: Convert to fraction form
    40,465.80/60,710.60 = 20,758.12/x
  3. Step 3: Cross multiply
    40,465.80x = 60,710.60 × 20,758.12
  4. Step 4: Simplify right side
    40,465.80x = 1,260,237,920.07
  5. Step 5: Solve for x
    x = 1,260,237,920.07/40,465.80
  6. Step 6: Final answer
    x = 31,143.28

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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.