Home / 78,684.36-118,061.43-41,235.53

Finding the Fourth Proportional to 78,684.36, 118,061.43 and 41,235.53

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Solution

The fourth proportional to 78,684.36, 118,061.43 and 41,235.53 is: 61,871.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,684.36 : 118,061.43 = 41,235.53 : x
  2. Step 2: Convert to fraction form
    78,684.36/118,061.43 = 41,235.53/x
  3. Step 3: Cross multiply
    78,684.36x = 118,061.43 × 41,235.53
  4. Step 4: Simplify right side
    78,684.36x = 4,868,325,638.61
  5. Step 5: Solve for x
    x = 4,868,325,638.61/78,684.36
  6. Step 6: Final answer
    x = 61,871.58

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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.