Home / 81,392,306.20-122,088,459.30-70,432,811.80

Finding the Fourth Proportional to 81,392,306.20, 122,088,459.30 and 70,432,811.80

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Solution

The fourth proportional to 81,392,306.20, 122,088,459.30 and 70,432,811.80 is: 105,649,217.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,392,306.20 : 122,088,459.30 = 70,432,811.80 : x
  2. Step 2: Convert to fraction form
    81,392,306.20/122,088,459.30 = 70,432,811.80/x
  3. Step 3: Cross multiply
    81,392,306.20x = 122,088,459.30 × 70,432,811.80
  4. Step 4: Simplify right side
    81,392,306.20x = 8,599,033,476,828,859
  5. Step 5: Solve for x
    x = 8,599,033,476,828,859/81,392,306.20
  6. Step 6: Final answer
    x = 105,649,217.70

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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.