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Finding the Fourth Proportional to 91,065.53, 125,670.44 and 53,339.78

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Solution

The fourth proportional to 91,065.53, 125,670.44 and 53,339.78 is: 73,608.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,065.53 : 125,670.44 = 53,339.78 : x
  2. Step 2: Convert to fraction form
    91,065.53/125,670.44 = 53,339.78/x
  3. Step 3: Cross multiply
    91,065.53x = 125,670.44 × 53,339.78
  4. Step 4: Simplify right side
    91,065.53x = 6,703,233,355.40
  5. Step 5: Solve for x
    x = 6,703,233,355.40/91,065.53
  6. Step 6: Final answer
    x = 73,608.90

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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.