Home / 78,705.06-118,013.84-31,903.26

Finding the Fourth Proportional to 78,705.06, 118,013.84 and 31,903.26

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Solution

The fourth proportional to 78,705.06, 118,013.84 and 31,903.26 is: 47,837.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,705.06 : 118,013.84 = 31,903.26 : x
  2. Step 2: Convert to fraction form
    78,705.06/118,013.84 = 31,903.26/x
  3. Step 3: Cross multiply
    78,705.06x = 118,013.84 × 31,903.26
  4. Step 4: Simplify right side
    78,705.06x = 3,765,026,221.12
  5. Step 5: Solve for x
    x = 3,765,026,221.12/78,705.06
  6. Step 6: Final answer
    x = 47,837.16

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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.