Home / 53,868-74,343.60-31,530.72

Finding the Fourth Proportional to 53,868, 74,343.60 and 31,530.72

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Solution

The fourth proportional to 53,868, 74,343.60 and 31,530.72 is: 43,515.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,868 : 74,343.60 = 31,530.72 : x
  2. Step 2: Convert to fraction form
    53,868/74,343.60 = 31,530.72/x
  3. Step 3: Cross multiply
    53,868x = 74,343.60 × 31,530.72
  4. Step 4: Simplify right side
    53,868x = 2,344,107,235.39
  5. Step 5: Solve for x
    x = 2,344,107,235.39/53,868
  6. Step 6: Final answer
    x = 43,515.77

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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.