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Finding the Fourth Proportional to 53,275.92, 79,913.88 and 18,215.88

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Solution

The fourth proportional to 53,275.92, 79,913.88 and 18,215.88 is: 27,323.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,275.92 : 79,913.88 = 18,215.88 : x
  2. Step 2: Convert to fraction form
    53,275.92/79,913.88 = 18,215.88/x
  3. Step 3: Cross multiply
    53,275.92x = 79,913.88 × 18,215.88
  4. Step 4: Simplify right side
    53,275.92x = 1,455,701,648.41
  5. Step 5: Solve for x
    x = 1,455,701,648.41/53,275.92
  6. Step 6: Final answer
    x = 27,323.82

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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.