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Finding the Fourth Proportional to 144,052.60, 216,078.90 and 38,871.40

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Solution

The fourth proportional to 144,052.60, 216,078.90 and 38,871.40 is: 58,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,052.60 : 216,078.90 = 38,871.40 : x
  2. Step 2: Convert to fraction form
    144,052.60/216,078.90 = 38,871.40/x
  3. Step 3: Cross multiply
    144,052.60x = 216,078.90 × 38,871.40
  4. Step 4: Simplify right side
    144,052.60x = 8,399,289,353.46
  5. Step 5: Solve for x
    x = 8,399,289,353.46/144,052.60
  6. Step 6: Final answer
    x = 58,307.10

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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.