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Finding the Fourth Proportional to 90,913.94, 125,396.61 and 60,684.02

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Solution

The fourth proportional to 90,913.94, 125,396.61 and 60,684.02 is: 83,700.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,913.94 : 125,396.61 = 60,684.02 : x
  2. Step 2: Convert to fraction form
    90,913.94/125,396.61 = 60,684.02/x
  3. Step 3: Cross multiply
    90,913.94x = 125,396.61 × 60,684.02
  4. Step 4: Simplify right side
    90,913.94x = 7,609,570,389.17
  5. Step 5: Solve for x
    x = 7,609,570,389.17/90,913.94
  6. Step 6: Final answer
    x = 83,700.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.