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Finding the Fourth Proportional to 53,393.68, 80,078.10 and 20,117.08

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Solution

The fourth proportional to 53,393.68, 80,078.10 and 20,117.08 is: 30,170.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,393.68 : 80,078.10 = 20,117.08 : x
  2. Step 2: Convert to fraction form
    53,393.68/80,078.10 = 20,117.08/x
  3. Step 3: Cross multiply
    53,393.68x = 80,078.10 × 20,117.08
  4. Step 4: Simplify right side
    53,393.68x = 1,610,937,543.95
  5. Step 5: Solve for x
    x = 1,610,937,543.95/53,393.68
  6. Step 6: Final answer
    x = 30,170.94

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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.