Home / 80,852,857.20-121,284,534.60-42,589,105.20

Finding the Fourth Proportional to 80,852,857.20, 121,284,534.60 and 42,589,105.20

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Solution

The fourth proportional to 80,852,857.20, 121,284,534.60 and 42,589,105.20 is: 63,886,422.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,852,857.20 : 121,284,534.60 = 42,589,105.20 : x
  2. Step 2: Convert to fraction form
    80,852,857.20/121,284,534.60 = 42,589,105.20/x
  3. Step 3: Cross multiply
    80,852,857.20x = 121,284,534.60 × 42,589,105.20
  4. Step 4: Simplify right side
    80,852,857.20x = 5,165,399,803,212,440
  5. Step 5: Solve for x
    x = 5,165,399,803,212,440/80,852,857.20
  6. Step 6: Final answer
    x = 63,886,422.60

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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.