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Finding the Fourth Proportional to 66,047,170.10, 98,986,774.35 and 31,894,978.10

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Solution

The fourth proportional to 66,047,170.10, 98,986,774.35 and 31,894,978.10 is: 47,801,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,047,170.10 : 98,986,774.35 = 31,894,978.10 : x
  2. Step 2: Convert to fraction form
    66,047,170.10/98,986,774.35 = 31,894,978.10/x
  3. Step 3: Cross multiply
    66,047,170.10x = 98,986,774.35 × 31,894,978.10
  4. Step 4: Simplify right side
    66,047,170.10x = 3,157,181,000,082,891.50
  5. Step 5: Solve for x
    x = 3,157,181,000,082,891.50/66,047,170.10
  6. Step 6: Final answer
    x = 47,801,911.80

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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.