Home / 70,218.07-105,353.70-42,157.72

Finding the Fourth Proportional to 70,218.07, 105,353.70 and 42,157.72

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Solution

The fourth proportional to 70,218.07, 105,353.70 and 42,157.72 is: 63,252.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,218.07 : 105,353.70 = 42,157.72 : x
  2. Step 2: Convert to fraction form
    70,218.07/105,353.70 = 42,157.72/x
  3. Step 3: Cross multiply
    70,218.07x = 105,353.70 × 42,157.72
  4. Step 4: Simplify right side
    70,218.07x = 4,441,471,785.56
  5. Step 5: Solve for x
    x = 4,441,471,785.56/70,218.07
  6. Step 6: Final answer
    x = 63,252.55

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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.