Home / 72,438,916.20-108,663,623.10-43,623,004.20

Finding the Fourth Proportional to 72,438,916.20, 108,663,623.10 and 43,623,004.20

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Solution

The fourth proportional to 72,438,916.20, 108,663,623.10 and 43,623,004.20 is: 65,437,667.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,438,916.20 : 108,663,623.10 = 43,623,004.20 : x
  2. Step 2: Convert to fraction form
    72,438,916.20/108,663,623.10 = 43,623,004.20/x
  3. Step 3: Cross multiply
    72,438,916.20x = 108,663,623.10 × 43,623,004.20
  4. Step 4: Simplify right side
    72,438,916.20x = 4,740,233,686,878,517
  5. Step 5: Solve for x
    x = 4,740,233,686,878,517/72,438,916.20
  6. Step 6: Final answer
    x = 65,437,667.15

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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.