Home / 78,714.24-108,624.40-42,904.64

Finding the Fourth Proportional to 78,714.24, 108,624.40 and 42,904.64

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Solution

The fourth proportional to 78,714.24, 108,624.40 and 42,904.64 is: 59,207.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,714.24 : 108,624.40 = 42,904.64 : x
  2. Step 2: Convert to fraction form
    78,714.24/108,624.40 = 42,904.64/x
  3. Step 3: Cross multiply
    78,714.24x = 108,624.40 × 42,904.64
  4. Step 4: Simplify right side
    78,714.24x = 4,660,490,777.22
  5. Step 5: Solve for x
    x = 4,660,490,777.22/78,714.24
  6. Step 6: Final answer
    x = 59,207.72

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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.