Home / 53,719.76-74,128.20-49,756.88

Finding the Fourth Proportional to 53,719.76, 74,128.20 and 49,756.88

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Solution

The fourth proportional to 53,719.76, 74,128.20 and 49,756.88 is: 68,659.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,719.76 : 74,128.20 = 49,756.88 : x
  2. Step 2: Convert to fraction form
    53,719.76/74,128.20 = 49,756.88/x
  3. Step 3: Cross multiply
    53,719.76x = 74,128.20 × 49,756.88
  4. Step 4: Simplify right side
    53,719.76x = 3,688,387,952.02
  5. Step 5: Solve for x
    x = 3,688,387,952.02/53,719.76
  6. Step 6: Final answer
    x = 68,659.80

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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.