Home / 53,731.72-74,156.21-31,078.05

Finding the Fourth Proportional to 53,731.72, 74,156.21 and 31,078.05

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Solution

The fourth proportional to 53,731.72, 74,156.21 and 31,078.05 is: 42,891.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,731.72 : 74,156.21 = 31,078.05 : x
  2. Step 2: Convert to fraction form
    53,731.72/74,156.21 = 31,078.05/x
  3. Step 3: Cross multiply
    53,731.72x = 74,156.21 × 31,078.05
  4. Step 4: Simplify right side
    53,731.72x = 2,304,630,085.26
  5. Step 5: Solve for x
    x = 2,304,630,085.26/53,731.72
  6. Step 6: Final answer
    x = 42,891.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.