Home / 71,878.20-99,099.77-58,909.75

Finding the Fourth Proportional to 71,878.20, 99,099.77 and 58,909.75

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Solution

The fourth proportional to 71,878.20, 99,099.77 and 58,909.75 is: 81,219.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,878.20 : 99,099.77 = 58,909.75 : x
  2. Step 2: Convert to fraction form
    71,878.20/99,099.77 = 58,909.75/x
  3. Step 3: Cross multiply
    71,878.20x = 99,099.77 × 58,909.75
  4. Step 4: Simplify right side
    71,878.20x = 5,837,942,464.83
  5. Step 5: Solve for x
    x = 5,837,942,464.83/71,878.20
  6. Step 6: Final answer
    x = 81,219.93

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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.