Home / 72,238.91-99,688.93-40,408.07

Finding the Fourth Proportional to 72,238.91, 99,688.93 and 40,408.07

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Solution

The fourth proportional to 72,238.91, 99,688.93 and 40,408.07 is: 55,762.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,238.91 : 99,688.93 = 40,408.07 : x
  2. Step 2: Convert to fraction form
    72,238.91/99,688.93 = 40,408.07/x
  3. Step 3: Cross multiply
    72,238.91x = 99,688.93 × 40,408.07
  4. Step 4: Simplify right side
    72,238.91x = 4,028,236,662.20
  5. Step 5: Solve for x
    x = 4,028,236,662.20/72,238.91
  6. Step 6: Final answer
    x = 55,762.70

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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.