Home / 70,880.20-106,320.30-42,886.60

Finding the Fourth Proportional to 70,880.20, 106,320.30 and 42,886.60

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Solution

The fourth proportional to 70,880.20, 106,320.30 and 42,886.60 is: 64,329.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,880.20 : 106,320.30 = 42,886.60 : x
  2. Step 2: Convert to fraction form
    70,880.20/106,320.30 = 42,886.60/x
  3. Step 3: Cross multiply
    70,880.20x = 106,320.30 × 42,886.60
  4. Step 4: Simplify right side
    70,880.20x = 4,559,716,177.98
  5. Step 5: Solve for x
    x = 4,559,716,177.98/70,880.20
  6. Step 6: Final answer
    x = 64,329.90

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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.