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Finding the Fourth Proportional to 40,488.79, 55,874.16 and 22,339.68

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Solution

The fourth proportional to 40,488.79, 55,874.16 and 22,339.68 is: 30,828.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,488.79 : 55,874.16 = 22,339.68 : x
  2. Step 2: Convert to fraction form
    40,488.79/55,874.16 = 22,339.68/x
  3. Step 3: Cross multiply
    40,488.79x = 55,874.16 × 22,339.68
  4. Step 4: Simplify right side
    40,488.79x = 1,248,210,545.74
  5. Step 5: Solve for x
    x = 1,248,210,545.74/40,488.79
  6. Step 6: Final answer
    x = 30,828.55

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1.5x scale

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.