Home / 42,799.92-64,135.08-31,688.88

Finding the Fourth Proportional to 42,799.92, 64,135.08 and 31,688.88

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Solution

The fourth proportional to 42,799.92, 64,135.08 and 31,688.88 is: 47,485.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,799.92 : 64,135.08 = 31,688.88 : x
  2. Step 2: Convert to fraction form
    42,799.92/64,135.08 = 31,688.88/x
  3. Step 3: Cross multiply
    42,799.92x = 64,135.08 × 31,688.88
  4. Step 4: Simplify right side
    42,799.92x = 2,032,368,853.91
  5. Step 5: Solve for x
    x = 2,032,368,853.91/42,799.92
  6. Step 6: Final answer
    x = 47,485.34

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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.