Home / 82,392.02-123,592.85-31,791.32

Finding the Fourth Proportional to 82,392.02, 123,592.85 and 31,791.32

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Solution

The fourth proportional to 82,392.02, 123,592.85 and 31,791.32 is: 47,688.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,392.02 : 123,592.85 = 31,791.32 : x
  2. Step 2: Convert to fraction form
    82,392.02/123,592.85 = 31,791.32/x
  3. Step 3: Cross multiply
    82,392.02x = 123,592.85 × 31,791.32
  4. Step 4: Simplify right side
    82,392.02x = 3,929,179,875.19
  5. Step 5: Solve for x
    x = 3,929,179,875.19/82,392.02
  6. Step 6: Final answer
    x = 47,688.84

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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.