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Finding the Fourth Proportional to 80,871.93, 121,345.47 and 30,935.52

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Solution

The fourth proportional to 80,871.93, 121,345.47 and 30,935.52 is: 46,417.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,871.93 : 121,345.47 = 30,935.52 : x
  2. Step 2: Convert to fraction form
    80,871.93/121,345.47 = 30,935.52/x
  3. Step 3: Cross multiply
    80,871.93x = 121,345.47 × 30,935.52
  4. Step 4: Simplify right side
    80,871.93x = 3,753,885,214.09
  5. Step 5: Solve for x
    x = 3,753,885,214.09/80,871.93
  6. Step 6: Final answer
    x = 46,417.65

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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.