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Finding the Fourth Proportional to 141,382.89, 212,068.80 and 47,888.64

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Solution

The fourth proportional to 141,382.89, 212,068.80 and 47,888.64 is: 71,831.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,382.89 : 212,068.80 = 47,888.64 : x
  2. Step 2: Convert to fraction form
    141,382.89/212,068.80 = 47,888.64/x
  3. Step 3: Cross multiply
    141,382.89x = 212,068.80 × 47,888.64
  4. Step 4: Simplify right side
    141,382.89x = 10,155,686,418.43
  5. Step 5: Solve for x
    x = 10,155,686,418.43/141,382.89
  6. Step 6: Final answer
    x = 71,831.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.