Home / 53,987.31-74,485.97-31,318.45

Finding the Fourth Proportional to 53,987.31, 74,485.97 and 31,318.45

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Solution

The fourth proportional to 53,987.31, 74,485.97 and 31,318.45 is: 43,209.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,987.31 : 74,485.97 = 31,318.45 : x
  2. Step 2: Convert to fraction form
    53,987.31/74,485.97 = 31,318.45/x
  3. Step 3: Cross multiply
    53,987.31x = 74,485.97 × 31,318.45
  4. Step 4: Simplify right side
    53,987.31x = 2,332,784,754.72
  5. Step 5: Solve for x
    x = 2,332,784,754.72/53,987.31
  6. Step 6: Final answer
    x = 43,209.87

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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.