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Finding the Fourth Proportional to 91,114.44, 125,752.56 and 75,980.40

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Solution

The fourth proportional to 91,114.44, 125,752.56 and 75,980.40 is: 104,865.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,114.44 : 125,752.56 = 75,980.40 : x
  2. Step 2: Convert to fraction form
    91,114.44/125,752.56 = 75,980.40/x
  3. Step 3: Cross multiply
    91,114.44x = 125,752.56 × 75,980.40
  4. Step 4: Simplify right side
    91,114.44x = 9,554,729,809.82
  5. Step 5: Solve for x
    x = 9,554,729,809.82/91,114.44
  6. Step 6: Final answer
    x = 104,865.15

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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.