Home / 53,139.21-73,332.27-28,940.36

Finding the Fourth Proportional to 53,139.21, 73,332.27 and 28,940.36

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Solution

The fourth proportional to 53,139.21, 73,332.27 and 28,940.36 is: 39,937.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,139.21 : 73,332.27 = 28,940.36 : x
  2. Step 2: Convert to fraction form
    53,139.21/73,332.27 = 28,940.36/x
  3. Step 3: Cross multiply
    53,139.21x = 73,332.27 × 28,940.36
  4. Step 4: Simplify right side
    53,139.21x = 2,122,261,926.76
  5. Step 5: Solve for x
    x = 2,122,261,926.76/53,139.21
  6. Step 6: Final answer
    x = 39,937.78

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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.