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Finding the Fourth Proportional to 91,147.68, 125,750.16 and 53,408.16

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Solution

The fourth proportional to 91,147.68, 125,750.16 and 53,408.16 is: 73,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,147.68 : 125,750.16 = 53,408.16 : x
  2. Step 2: Convert to fraction form
    91,147.68/125,750.16 = 53,408.16/x
  3. Step 3: Cross multiply
    91,147.68x = 125,750.16 × 53,408.16
  4. Step 4: Simplify right side
    91,147.68x = 6,716,084,665.31
  5. Step 5: Solve for x
    x = 6,716,084,665.31/91,147.68
  6. Step 6: Final answer
    x = 73,683.55

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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.