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Finding the Fourth Proportional to 78,416.64, 108,230.40 and 44,904.96

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Solution

The fourth proportional to 78,416.64, 108,230.40 and 44,904.96 is: 61,977.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,416.64 : 108,230.40 = 44,904.96 : x
  2. Step 2: Convert to fraction form
    78,416.64/108,230.40 = 44,904.96/x
  3. Step 3: Cross multiply
    78,416.64x = 108,230.40 × 44,904.96
  4. Step 4: Simplify right side
    78,416.64x = 4,860,081,782.78
  5. Step 5: Solve for x
    x = 4,860,081,782.78/78,416.64
  6. Step 6: Final answer
    x = 61,977.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.