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Finding the Fourth Proportional to 66,430,301.70, 99,645,452.55 and 55,848,720.90

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Solution

The fourth proportional to 66,430,301.70, 99,645,452.55 and 55,848,720.90 is: 83,773,081.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430,301.70 : 99,645,452.55 = 55,848,720.90 : x
  2. Step 2: Convert to fraction form
    66,430,301.70/99,645,452.55 = 55,848,720.90/x
  3. Step 3: Cross multiply
    66,430,301.70x = 99,645,452.55 × 55,848,720.90
  4. Step 4: Simplify right side
    66,430,301.70x = 5,565,071,068,419,143
  5. Step 5: Solve for x
    x = 5,565,071,068,419,143/66,430,301.70
  6. Step 6: Final answer
    x = 83,773,081.35

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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.