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Finding the Fourth Proportional to 53,839.68, 74,278.83 and 53,756.65

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Solution

The fourth proportional to 53,839.68, 74,278.83 and 53,756.65 is: 74,164.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,839.68 : 74,278.83 = 53,756.65 : x
  2. Step 2: Convert to fraction form
    53,839.68/74,278.83 = 53,756.65/x
  3. Step 3: Cross multiply
    53,839.68x = 74,278.83 × 53,756.65
  4. Step 4: Simplify right side
    53,839.68x = 3,992,980,762.52
  5. Step 5: Solve for x
    x = 3,992,980,762.52/53,839.68
  6. Step 6: Final answer
    x = 74,164.27

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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.