Home / 81,645,188.76-122,464,721.34-20,234,549.52

Finding the Fourth Proportional to 81,645,188.76, 122,464,721.34 and 20,234,549.52

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Solution

The fourth proportional to 81,645,188.76, 122,464,721.34 and 20,234,549.52 is: 30,351,065.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,645,188.76 : 122,464,721.34 = 20,234,549.52 : x
  2. Step 2: Convert to fraction form
    81,645,188.76/122,464,721.34 = 20,234,549.52/x
  3. Step 3: Cross multiply
    81,645,188.76x = 122,464,721.34 × 20,234,549.52
  4. Step 4: Simplify right side
    81,645,188.76x = 2,478,018,468,407,231
  5. Step 5: Solve for x
    x = 2,478,018,468,407,231/81,645,188.76
  6. Step 6: Final answer
    x = 30,351,065.46

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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.