Home / 78,921.25-118,381.66-65,014.36

Finding the Fourth Proportional to 78,921.25, 118,381.66 and 65,014.36

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Solution

The fourth proportional to 78,921.25, 118,381.66 and 65,014.36 is: 97,521.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,921.25 : 118,381.66 = 65,014.36 : x
  2. Step 2: Convert to fraction form
    78,921.25/118,381.66 = 65,014.36/x
  3. Step 3: Cross multiply
    78,921.25x = 118,381.66 × 65,014.36
  4. Step 4: Simplify right side
    78,921.25x = 7,696,507,860.64
  5. Step 5: Solve for x
    x = 7,696,507,860.64/78,921.25
  6. Step 6: Final answer
    x = 97,521.36

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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.