Home / 78,714.12-108,622.29-42,903.36

Finding the Fourth Proportional to 78,714.12, 108,622.29 and 42,903.36

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Solution

The fourth proportional to 78,714.12, 108,622.29 and 42,903.36 is: 59,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,714.12 : 108,622.29 = 42,903.36 : x
  2. Step 2: Convert to fraction form
    78,714.12/108,622.29 = 42,903.36/x
  3. Step 3: Cross multiply
    78,714.12x = 108,622.29 × 42,903.36
  4. Step 4: Simplify right side
    78,714.12x = 4,660,261,211.89
  5. Step 5: Solve for x
    x = 4,660,261,211.89/78,714.12
  6. Step 6: Final answer
    x = 59,204.90

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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.