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Finding the Fourth Proportional to 71,314,523.60, 106,971,785.40 and 66,779,560.40

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Solution

The fourth proportional to 71,314,523.60, 106,971,785.40 and 66,779,560.40 is: 100,169,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,314,523.60 : 106,971,785.40 = 66,779,560.40 : x
  2. Step 2: Convert to fraction form
    71,314,523.60/106,971,785.40 = 66,779,560.40/x
  3. Step 3: Cross multiply
    71,314,523.60x = 106,971,785.40 × 66,779,560.40
  4. Step 4: Simplify right side
    71,314,523.60x = 7,143,528,804,215,138
  5. Step 5: Solve for x
    x = 7,143,528,804,215,138/71,314,523.60
  6. Step 6: Final answer
    x = 100,169,340.60

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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.