Home / 80,895.57-121,398.02-28,305.51

Finding the Fourth Proportional to 80,895.57, 121,398.02 and 28,305.51

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Solution

The fourth proportional to 80,895.57, 121,398.02 and 28,305.51 is: 42,477.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,895.57 : 121,398.02 = 28,305.51 : x
  2. Step 2: Convert to fraction form
    80,895.57/121,398.02 = 28,305.51/x
  3. Step 3: Cross multiply
    80,895.57x = 121,398.02 × 28,305.51
  4. Step 4: Simplify right side
    80,895.57x = 3,436,232,869.09
  5. Step 5: Solve for x
    x = 3,436,232,869.09/80,895.57
  6. Step 6: Final answer
    x = 42,477.39

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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.