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Finding the Fourth Proportional to 122,485.88, 183,740.43 and 47,611.77

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Solution

The fourth proportional to 122,485.88, 183,740.43 and 47,611.77 is: 71,422.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,485.88 : 183,740.43 = 47,611.77 : x
  2. Step 2: Convert to fraction form
    122,485.88/183,740.43 = 47,611.77/x
  3. Step 3: Cross multiply
    122,485.88x = 183,740.43 × 47,611.77
  4. Step 4: Simplify right side
    122,485.88x = 8,748,207,092.86
  5. Step 5: Solve for x
    x = 8,748,207,092.86/122,485.88
  6. Step 6: Final answer
    x = 71,422.17

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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.