Home / 80,978,088.12-111,763,124.19-49,633,572.64

Finding the Fourth Proportional to 80,978,088.12, 111,763,124.19 and 49,633,572.64

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Solution

The fourth proportional to 80,978,088.12, 111,763,124.19 and 49,633,572.64 is: 68,502,520.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,978,088.12 : 111,763,124.19 = 49,633,572.64 : x
  2. Step 2: Convert to fraction form
    80,978,088.12/111,763,124.19 = 49,633,572.64/x
  3. Step 3: Cross multiply
    80,978,088.12x = 111,763,124.19 × 49,633,572.64
  4. Step 4: Simplify right side
    80,978,088.12x = 5,547,203,142,957,706
  5. Step 5: Solve for x
    x = 5,547,203,142,957,706/80,978,088.12
  6. Step 6: Final answer
    x = 68,502,520.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.