Home / 53,986.81-74,485.28-31,317.95

Finding the Fourth Proportional to 53,986.81, 74,485.28 and 31,317.95

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Solution

The fourth proportional to 53,986.81, 74,485.28 and 31,317.95 is: 43,209.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,986.81 : 74,485.28 = 31,317.95 : x
  2. Step 2: Convert to fraction form
    53,986.81/74,485.28 = 31,317.95/x
  3. Step 3: Cross multiply
    53,986.81x = 74,485.28 × 31,317.95
  4. Step 4: Simplify right side
    53,986.81x = 2,332,725,980.64
  5. Step 5: Solve for x
    x = 2,332,725,980.64/53,986.81
  6. Step 6: Final answer
    x = 43,209.19

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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.