Home / 80,903.04-121,277.76-28,278.24

Finding the Fourth Proportional to 80,903.04, 121,277.76 and 28,278.24

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Solution

The fourth proportional to 80,903.04, 121,277.76 and 28,278.24 is: 42,390.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,903.04 : 121,277.76 = 28,278.24 : x
  2. Step 2: Convert to fraction form
    80,903.04/121,277.76 = 28,278.24/x
  3. Step 3: Cross multiply
    80,903.04x = 121,277.76 × 28,278.24
  4. Step 4: Simplify right side
    80,903.04x = 3,429,521,603.94
  5. Step 5: Solve for x
    x = 3,429,521,603.94/80,903.04
  6. Step 6: Final answer
    x = 42,390.52

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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.