Home / 71,130.32-106,701.02-21,206.60

Finding the Fourth Proportional to 71,130.32, 106,701.02 and 21,206.60

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Solution

The fourth proportional to 71,130.32, 106,701.02 and 21,206.60 is: 31,811.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,130.32 : 106,701.02 = 21,206.60 : x
  2. Step 2: Convert to fraction form
    71,130.32/106,701.02 = 21,206.60/x
  3. Step 3: Cross multiply
    71,130.32x = 106,701.02 × 21,206.60
  4. Step 4: Simplify right side
    71,130.32x = 2,262,765,850.73
  5. Step 5: Solve for x
    x = 2,262,765,850.73/71,130.32
  6. Step 6: Final answer
    x = 31,811.55

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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.