Home / 70,433.20-105,649.79-42,672.88

Finding the Fourth Proportional to 70,433.20, 105,649.79 and 42,672.88

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Solution

The fourth proportional to 70,433.20, 105,649.79 and 42,672.88 is: 64,009.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,433.20 : 105,649.79 = 42,672.88 : x
  2. Step 2: Convert to fraction form
    70,433.20/105,649.79 = 42,672.88/x
  3. Step 3: Cross multiply
    70,433.20x = 105,649.79 × 42,672.88
  4. Step 4: Simplify right side
    70,433.20x = 4,508,380,389.13
  5. Step 5: Solve for x
    x = 4,508,380,389.13/70,433.20
  6. Step 6: Final answer
    x = 64,009.31

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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.