Home / 78,778.08-108,714.64-42,967.84

Finding the Fourth Proportional to 78,778.08, 108,714.64 and 42,967.84

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Solution

The fourth proportional to 78,778.08, 108,714.64 and 42,967.84 is: 59,296.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,778.08 : 108,714.64 = 42,967.84 : x
  2. Step 2: Convert to fraction form
    78,778.08/108,714.64 = 42,967.84/x
  3. Step 3: Cross multiply
    78,778.08x = 108,714.64 × 42,967.84
  4. Step 4: Simplify right side
    78,778.08x = 4,671,233,257.18
  5. Step 5: Solve for x
    x = 4,671,233,257.18/78,778.08
  6. Step 6: Final answer
    x = 59,296.10

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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.