Home / 61,002,084.60-91,503,126.90-20,611,985.40

Finding the Fourth Proportional to 61,002,084.60, 91,503,126.90 and 20,611,985.40

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Solution

The fourth proportional to 61,002,084.60, 91,503,126.90 and 20,611,985.40 is: 30,917,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,002,084.60 : 91,503,126.90 = 20,611,985.40 : x
  2. Step 2: Convert to fraction form
    61,002,084.60/91,503,126.90 = 20,611,985.40/x
  3. Step 3: Cross multiply
    61,002,084.60x = 91,503,126.90 × 20,611,985.40
  4. Step 4: Simplify right side
    61,002,084.60x = 1,886,061,115,717,147.25
  5. Step 5: Solve for x
    x = 1,886,061,115,717,147.25/61,002,084.60
  6. Step 6: Final answer
    x = 30,917,978.10

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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.