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Finding the Fourth Proportional to 72,023.40, 107,943.30 and 40,433.40

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Solution

The fourth proportional to 72,023.40, 107,943.30 and 40,433.40 is: 60,598.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,023.40 : 107,943.30 = 40,433.40 : x
  2. Step 2: Convert to fraction form
    72,023.40/107,943.30 = 40,433.40/x
  3. Step 3: Cross multiply
    72,023.40x = 107,943.30 × 40,433.40
  4. Step 4: Simplify right side
    72,023.40x = 4,364,514,626.22
  5. Step 5: Solve for x
    x = 4,364,514,626.22/72,023.40
  6. Step 6: Final answer
    x = 60,598.56

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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.