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Finding the Fourth Proportional to 91,224.76, 125,774.94 and 77,599.48

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Solution

The fourth proportional to 91,224.76, 125,774.94 and 77,599.48 is: 106,989.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,224.76 : 125,774.94 = 77,599.48 : x
  2. Step 2: Convert to fraction form
    91,224.76/125,774.94 = 77,599.48/x
  3. Step 3: Cross multiply
    91,224.76x = 125,774.94 × 77,599.48
  4. Step 4: Simplify right side
    91,224.76x = 9,760,069,941.03
  5. Step 5: Solve for x
    x = 9,760,069,941.03/91,224.76
  6. Step 6: Final answer
    x = 106,989.26

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1.5x scale

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.