Home / 75,768.86-113,686.12-40,667.50

Finding the Fourth Proportional to 75,768.86, 113,686.12 and 40,667.50

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Solution

The fourth proportional to 75,768.86, 113,686.12 and 40,667.50 is: 61,018.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,768.86 : 113,686.12 = 40,667.50 : x
  2. Step 2: Convert to fraction form
    75,768.86/113,686.12 = 40,667.50/x
  3. Step 3: Cross multiply
    75,768.86x = 113,686.12 × 40,667.50
  4. Step 4: Simplify right side
    75,768.86x = 4,623,330,285.10
  5. Step 5: Solve for x
    x = 4,623,330,285.10/75,768.86
  6. Step 6: Final answer
    x = 61,018.87

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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.