Home / 145,042,905.20-217,501,372.20-47,961,100.40

Finding the Fourth Proportional to 145,042,905.20, 217,501,372.20 and 47,961,100.40

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Solution

The fourth proportional to 145,042,905.20, 217,501,372.20 and 47,961,100.40 is: 71,920,823.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,042,905.20 : 217,501,372.20 = 47,961,100.40 : x
  2. Step 2: Convert to fraction form
    145,042,905.20/217,501,372.20 = 47,961,100.40/x
  3. Step 3: Cross multiply
    145,042,905.20x = 217,501,372.20 × 47,961,100.40
  4. Step 4: Simplify right side
    145,042,905.20x = 10,431,605,149,221,968
  5. Step 5: Solve for x
    x = 10,431,605,149,221,968/145,042,905.20
  6. Step 6: Final answer
    x = 71,920,823.25

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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.