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Finding the Fourth Proportional to 122,365.60, 183,615.30 and 47,488.72

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Solution

The fourth proportional to 122,365.60, 183,615.30 and 47,488.72 is: 71,259.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,365.60 : 183,615.30 = 47,488.72 : x
  2. Step 2: Convert to fraction form
    122,365.60/183,615.30 = 47,488.72/x
  3. Step 3: Cross multiply
    122,365.60x = 183,615.30 × 47,488.72
  4. Step 4: Simplify right side
    122,365.60x = 8,719,655,569.42
  5. Step 5: Solve for x
    x = 8,719,655,569.42/122,365.60
  6. Step 6: Final answer
    x = 71,259.04

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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.