Home / 80,904.99-121,357.50-28,329.51

Finding the Fourth Proportional to 80,904.99, 121,357.50 and 28,329.51

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Solution

The fourth proportional to 80,904.99, 121,357.50 and 28,329.51 is: 42,494.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,904.99 : 121,357.50 = 28,329.51 : x
  2. Step 2: Convert to fraction form
    80,904.99/121,357.50 = 28,329.51/x
  3. Step 3: Cross multiply
    80,904.99x = 121,357.50 × 28,329.51
  4. Step 4: Simplify right side
    80,904.99x = 3,437,998,509.83
  5. Step 5: Solve for x
    x = 3,437,998,509.83/80,904.99
  6. Step 6: Final answer
    x = 42,494.27

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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.