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Finding the Fourth Proportional to 91,318.74, 136,789.44 and 53,763.12

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Solution

The fourth proportional to 91,318.74, 136,789.44 and 53,763.12 is: 80,533.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,318.74 : 136,789.44 = 53,763.12 : x
  2. Step 2: Convert to fraction form
    91,318.74/136,789.44 = 53,763.12/x
  3. Step 3: Cross multiply
    91,318.74x = 136,789.44 × 53,763.12
  4. Step 4: Simplify right side
    91,318.74x = 7,354,227,077.45
  5. Step 5: Solve for x
    x = 7,354,227,077.45/91,318.74
  6. Step 6: Final answer
    x = 80,533.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.