Home / 70,887.40-106,281.82-31,423.08

Finding the Fourth Proportional to 70,887.40, 106,281.82 and 31,423.08

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Solution

The fourth proportional to 70,887.40, 106,281.82 and 31,423.08 is: 47,112.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,887.40 : 106,281.82 = 31,423.08 : x
  2. Step 2: Convert to fraction form
    70,887.40/106,281.82 = 31,423.08/x
  3. Step 3: Cross multiply
    70,887.40x = 106,281.82 × 31,423.08
  4. Step 4: Simplify right side
    70,887.40x = 3,339,702,132.41
  5. Step 5: Solve for x
    x = 3,339,702,132.41/70,887.40
  6. Step 6: Final answer
    x = 47,112.78

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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.