Home / 72,035.28-99,408.36-40,204.08

Finding the Fourth Proportional to 72,035.28, 99,408.36 and 40,204.08

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Solution

The fourth proportional to 72,035.28, 99,408.36 and 40,204.08 is: 55,481.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,035.28 : 99,408.36 = 40,204.08 : x
  2. Step 2: Convert to fraction form
    72,035.28/99,408.36 = 40,204.08/x
  3. Step 3: Cross multiply
    72,035.28x = 99,408.36 × 40,204.08
  4. Step 4: Simplify right side
    72,035.28x = 3,996,621,658.11
  5. Step 5: Solve for x
    x = 3,996,621,658.11/72,035.28
  6. Step 6: Final answer
    x = 55,481.45

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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.