Home / 87,969.84-131,784.64-54,703.16

Finding the Fourth Proportional to 87,969.84, 131,784.64 and 54,703.16

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Solution

The fourth proportional to 87,969.84, 131,784.64 and 54,703.16 is: 81,948.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,969.84 : 131,784.64 = 54,703.16 : x
  2. Step 2: Convert to fraction form
    87,969.84/131,784.64 = 54,703.16/x
  3. Step 3: Cross multiply
    87,969.84x = 131,784.64 × 54,703.16
  4. Step 4: Simplify right side
    87,969.84x = 7,209,036,247.46
  5. Step 5: Solve for x
    x = 7,209,036,247.46/87,969.84
  6. Step 6: Final answer
    x = 81,948.95

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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.