Home / 53,800.20-74,253.34-31,139.80

Finding the Fourth Proportional to 53,800.20, 74,253.34 and 31,139.80

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Solution

The fourth proportional to 53,800.20, 74,253.34 and 31,139.80 is: 42,978.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,800.20 : 74,253.34 = 31,139.80 : x
  2. Step 2: Convert to fraction form
    53,800.20/74,253.34 = 31,139.80/x
  3. Step 3: Cross multiply
    53,800.20x = 74,253.34 × 31,139.80
  4. Step 4: Simplify right side
    53,800.20x = 2,312,234,156.93
  5. Step 5: Solve for x
    x = 2,312,234,156.93/53,800.20
  6. Step 6: Final answer
    x = 42,978.17

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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.