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Finding the Fourth Proportional to 87,360.40, 130,716.60 and 64,032.40

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Solution

The fourth proportional to 87,360.40, 130,716.60 and 64,032.40 is: 95,811.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,360.40 : 130,716.60 = 64,032.40 : x
  2. Step 2: Convert to fraction form
    87,360.40/130,716.60 = 64,032.40/x
  3. Step 3: Cross multiply
    87,360.40x = 130,716.60 × 64,032.40
  4. Step 4: Simplify right side
    87,360.40x = 8,370,097,617.84
  5. Step 5: Solve for x
    x = 8,370,097,617.84/87,360.40
  6. Step 6: Final answer
    x = 95,811.12

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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.