Home / 85,068.78-117,208.35-63,467.34

Finding the Fourth Proportional to 85,068.78, 117,208.35 and 63,467.34

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Solution

The fourth proportional to 85,068.78, 117,208.35 and 63,467.34 is: 87,445.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,068.78 : 117,208.35 = 63,467.34 : x
  2. Step 2: Convert to fraction form
    85,068.78/117,208.35 = 63,467.34/x
  3. Step 3: Cross multiply
    85,068.78x = 117,208.35 × 63,467.34
  4. Step 4: Simplify right side
    85,068.78x = 7,438,902,200.29
  5. Step 5: Solve for x
    x = 7,438,902,200.29/85,068.78
  6. Step 6: Final answer
    x = 87,445.74

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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.