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Finding the Fourth Proportional to 53,993.48, 80,990.94 and 18,934.16

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Solution

The fourth proportional to 53,993.48, 80,990.94 and 18,934.16 is: 28,401.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,993.48 : 80,990.94 = 18,934.16 : x
  2. Step 2: Convert to fraction form
    53,993.48/80,990.94 = 18,934.16/x
  3. Step 3: Cross multiply
    53,993.48x = 80,990.94 × 18,934.16
  4. Step 4: Simplify right side
    53,993.48x = 1,533,495,416.51
  5. Step 5: Solve for x
    x = 1,533,495,416.51/53,993.48
  6. Step 6: Final answer
    x = 28,401.49

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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.