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Finding the Fourth Proportional to 142,052.71, 212,929.28 and 47,257.58

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Solution

The fourth proportional to 142,052.71, 212,929.28 and 47,257.58 is: 70,836.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,052.71 : 212,929.28 = 47,257.58 : x
  2. Step 2: Convert to fraction form
    142,052.71/212,929.28 = 47,257.58/x
  3. Step 3: Cross multiply
    142,052.71x = 212,929.28 × 47,257.58
  4. Step 4: Simplify right side
    142,052.71x = 10,062,521,892.38
  5. Step 5: Solve for x
    x = 10,062,521,892.38/142,052.71
  6. Step 6: Final answer
    x = 70,836.53

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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.