Home / 91,261.85-136,905.93-28,087.38

Finding the Fourth Proportional to 91,261.85, 136,905.93 and 28,087.38

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Solution

The fourth proportional to 91,261.85, 136,905.93 and 28,087.38 is: 42,135.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,261.85 : 136,905.93 = 28,087.38 : x
  2. Step 2: Convert to fraction form
    91,261.85/136,905.93 = 28,087.38/x
  3. Step 3: Cross multiply
    91,261.85x = 136,905.93 × 28,087.38
  4. Step 4: Simplify right side
    91,261.85x = 3,845,328,880.16
  5. Step 5: Solve for x
    x = 3,845,328,880.16/91,261.85
  6. Step 6: Final answer
    x = 42,135.12

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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.