Home / 81,395,275.20-122,092,912.80-70,435,780.80

Finding the Fourth Proportional to 81,395,275.20, 122,092,912.80 and 70,435,780.80

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Solution

The fourth proportional to 81,395,275.20, 122,092,912.80 and 70,435,780.80 is: 105,653,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,395,275.20 : 122,092,912.80 = 70,435,780.80 : x
  2. Step 2: Convert to fraction form
    81,395,275.20/122,092,912.80 = 70,435,780.80/x
  3. Step 3: Cross multiply
    81,395,275.20x = 122,092,912.80 × 70,435,780.80
  4. Step 4: Simplify right side
    81,395,275.20x = 8,599,709,643,214,314
  5. Step 5: Solve for x
    x = 8,599,709,643,214,314/81,395,275.20
  6. Step 6: Final answer
    x = 105,653,671.20

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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.