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Finding the Fourth Proportional to 72,597.42, 108,876.48 and 19,994.40

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Solution

The fourth proportional to 72,597.42, 108,876.48 and 19,994.40 is: 29,986.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,597.42 : 108,876.48 = 19,994.40 : x
  2. Step 2: Convert to fraction form
    72,597.42/108,876.48 = 19,994.40/x
  3. Step 3: Cross multiply
    72,597.42x = 108,876.48 × 19,994.40
  4. Step 4: Simplify right side
    72,597.42x = 2,176,919,891.71
  5. Step 5: Solve for x
    x = 2,176,919,891.71/72,597.42
  6. Step 6: Final answer
    x = 29,986.19

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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.