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Finding the Fourth Proportional to 25,991,837.60, 38,991,442.80 and 8,039,069.60

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Solution

The fourth proportional to 25,991,837.60, 38,991,442.80 and 8,039,069.60 is: 12,059,744.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,991,837.60 : 38,991,442.80 = 8,039,069.60 : x
  2. Step 2: Convert to fraction form
    25,991,837.60/38,991,442.80 = 8,039,069.60/x
  3. Step 3: Cross multiply
    25,991,837.60x = 38,991,442.80 × 8,039,069.60
  4. Step 4: Simplify right side
    25,991,837.60x = 313,454,922,473,618.81
  5. Step 5: Solve for x
    x = 313,454,922,473,618.81/25,991,837.60
  6. Step 6: Final answer
    x = 12,059,744.57

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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.