Home / 91,142.58-125,787.63-53,416.80

Finding the Fourth Proportional to 91,142.58, 125,787.63 and 53,416.80

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Solution

The fourth proportional to 91,142.58, 125,787.63 and 53,416.80 is: 73,721.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,142.58 : 125,787.63 = 53,416.80 : x
  2. Step 2: Convert to fraction form
    91,142.58/125,787.63 = 53,416.80/x
  3. Step 3: Cross multiply
    91,142.58x = 125,787.63 × 53,416.80
  4. Step 4: Simplify right side
    91,142.58x = 6,719,172,674.18
  5. Step 5: Solve for x
    x = 6,719,172,674.18/91,142.58
  6. Step 6: Final answer
    x = 73,721.55

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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.