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Finding the Fourth Proportional to 53,189.87, 79,785.63 and 15,753.74

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Solution

The fourth proportional to 53,189.87, 79,785.63 and 15,753.74 is: 23,630.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,189.87 : 79,785.63 = 15,753.74 : x
  2. Step 2: Convert to fraction form
    53,189.87/79,785.63 = 15,753.74/x
  3. Step 3: Cross multiply
    53,189.87x = 79,785.63 × 15,753.74
  4. Step 4: Simplify right side
    53,189.87x = 1,256,921,671.83
  5. Step 5: Solve for x
    x = 1,256,921,671.83/53,189.87
  6. Step 6: Final answer
    x = 23,630.85

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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.