Home / 72,414,000.10-108,621,000.15-21,301,185.70

Finding the Fourth Proportional to 72,414,000.10, 108,621,000.15 and 21,301,185.70

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Solution

The fourth proportional to 72,414,000.10, 108,621,000.15 and 21,301,185.70 is: 31,951,778.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,414,000.10 : 108,621,000.15 = 21,301,185.70 : x
  2. Step 2: Convert to fraction form
    72,414,000.10/108,621,000.15 = 21,301,185.70/x
  3. Step 3: Cross multiply
    72,414,000.10x = 108,621,000.15 × 21,301,185.70
  4. Step 4: Simplify right side
    72,414,000.10x = 2,313,756,095,114,878
  5. Step 5: Solve for x
    x = 2,313,756,095,114,878/72,414,000.10
  6. Step 6: Final answer
    x = 31,951,778.55

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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.