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Finding the Fourth Proportional to 91,172.94, 125,719.47 and 59,282.70

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Solution

The fourth proportional to 91,172.94, 125,719.47 and 59,282.70 is: 81,745.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,172.94 : 125,719.47 = 59,282.70 : x
  2. Step 2: Convert to fraction form
    91,172.94/125,719.47 = 59,282.70/x
  3. Step 3: Cross multiply
    91,172.94x = 125,719.47 × 59,282.70
  4. Step 4: Simplify right side
    91,172.94x = 7,452,989,624.17
  5. Step 5: Solve for x
    x = 7,452,989,624.17/91,172.94
  6. Step 6: Final answer
    x = 81,745.63

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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.