Home / 78,714.78-118,088.64-43,580.76

Finding the Fourth Proportional to 78,714.78, 118,088.64 and 43,580.76

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Solution

The fourth proportional to 78,714.78, 118,088.64 and 43,580.76 is: 65,380.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,714.78 : 118,088.64 = 43,580.76 : x
  2. Step 2: Convert to fraction form
    78,714.78/118,088.64 = 43,580.76/x
  3. Step 3: Cross multiply
    78,714.78x = 118,088.64 × 43,580.76
  4. Step 4: Simplify right side
    78,714.78x = 5,146,392,678.57
  5. Step 5: Solve for x
    x = 5,146,392,678.57/78,714.78
  6. Step 6: Final answer
    x = 65,380.26

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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.