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Finding the Fourth Proportional to 66,430,244.80, 99,645,367.20 and 40,602,212.20

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Solution

The fourth proportional to 66,430,244.80, 99,645,367.20 and 40,602,212.20 is: 60,903,318.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430,244.80 : 99,645,367.20 = 40,602,212.20 : x
  2. Step 2: Convert to fraction form
    66,430,244.80/99,645,367.20 = 40,602,212.20/x
  3. Step 3: Cross multiply
    66,430,244.80x = 99,645,367.20 × 40,602,212.20
  4. Step 4: Simplify right side
    66,430,244.80x = 4,045,822,343,801,320.50
  5. Step 5: Solve for x
    x = 4,045,822,343,801,320.50/66,430,244.80
  6. Step 6: Final answer
    x = 60,903,318.30

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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.