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Finding the Fourth Proportional to 53,275.70, 79,910.41 and 19,992.95

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Solution

The fourth proportional to 53,275.70, 79,910.41 and 19,992.95 is: 29,988.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,275.70 : 79,910.41 = 19,992.95 : x
  2. Step 2: Convert to fraction form
    53,275.70/79,910.41 = 19,992.95/x
  3. Step 3: Cross multiply
    53,275.70x = 79,910.41 × 19,992.95
  4. Step 4: Simplify right side
    53,275.70x = 1,597,644,831.61
  5. Step 5: Solve for x
    x = 1,597,644,831.61/53,275.70
  6. Step 6: Final answer
    x = 29,988.25

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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.