Home / 80,852,872.20-121,284,557.10-42,589,120.20

Finding the Fourth Proportional to 80,852,872.20, 121,284,557.10 and 42,589,120.20

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Solution

The fourth proportional to 80,852,872.20, 121,284,557.10 and 42,589,120.20 is: 63,886,445.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,852,872.20 : 121,284,557.10 = 42,589,120.20 : x
  2. Step 2: Convert to fraction form
    80,852,872.20/121,284,557.10 = 42,589,120.20/x
  3. Step 3: Cross multiply
    80,852,872.20x = 121,284,557.10 × 42,589,120.20
  4. Step 4: Simplify right side
    80,852,872.20x = 5,165,402,580,735,664
  5. Step 5: Solve for x
    x = 5,165,402,580,735,664/80,852,872.20
  6. Step 6: Final answer
    x = 63,886,445.10

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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.