Home / 42,795.92-64,129.08-31,684.88

Finding the Fourth Proportional to 42,795.92, 64,129.08 and 31,684.88

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Solution

The fourth proportional to 42,795.92, 64,129.08 and 31,684.88 is: 47,479.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,795.92 : 64,129.08 = 31,684.88 : x
  2. Step 2: Convert to fraction form
    42,795.92/64,129.08 = 31,684.88/x
  3. Step 3: Cross multiply
    42,795.92x = 64,129.08 × 31,684.88
  4. Step 4: Simplify right side
    42,795.92x = 2,031,922,204.31
  5. Step 5: Solve for x
    x = 2,031,922,204.31/42,795.92
  6. Step 6: Final answer
    x = 47,479.34

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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.