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Finding the Fourth Proportional to 56,479.48, 84,668.85 and 21,443.74

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Solution

The fourth proportional to 56,479.48, 84,668.85 and 21,443.74 is: 32,146.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,479.48 : 84,668.85 = 21,443.74 : x
  2. Step 2: Convert to fraction form
    56,479.48/84,668.85 = 21,443.74/x
  3. Step 3: Cross multiply
    56,479.48x = 84,668.85 × 21,443.74
  4. Step 4: Simplify right side
    56,479.48x = 1,815,616,593.83
  5. Step 5: Solve for x
    x = 1,815,616,593.83/56,479.48
  6. Step 6: Final answer
    x = 32,146.48

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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.