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Finding the Fourth Proportional to 75,319,233.60, 112,978,850.40 and 20,731,713.60

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Solution

The fourth proportional to 75,319,233.60, 112,978,850.40 and 20,731,713.60 is: 31,097,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,319,233.60 : 112,978,850.40 = 20,731,713.60 : x
  2. Step 2: Convert to fraction form
    75,319,233.60/112,978,850.40 = 20,731,713.60/x
  3. Step 3: Cross multiply
    75,319,233.60x = 112,978,850.40 × 20,731,713.60
  4. Step 4: Simplify right side
    75,319,233.60x = 2,342,245,169,350,045.50
  5. Step 5: Solve for x
    x = 2,342,245,169,350,045.50/75,319,233.60
  6. Step 6: Final answer
    x = 31,097,570.40

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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.