Home / 78,765.48-118,169.28-34,395.84

Finding the Fourth Proportional to 78,765.48, 118,169.28 and 34,395.84

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Solution

The fourth proportional to 78,765.48, 118,169.28 and 34,395.84 is: 51,602.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,765.48 : 118,169.28 = 34,395.84 : x
  2. Step 2: Convert to fraction form
    78,765.48/118,169.28 = 34,395.84/x
  3. Step 3: Cross multiply
    78,765.48x = 118,169.28 × 34,395.84
  4. Step 4: Simplify right side
    78,765.48x = 4,064,531,647.80
  5. Step 5: Solve for x
    x = 4,064,531,647.80/78,765.48
  6. Step 6: Final answer
    x = 51,602.96

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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.