Home / 90,790.84-125,302.40-54,979.92

Finding the Fourth Proportional to 90,790.84, 125,302.40 and 54,979.92

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Solution

The fourth proportional to 90,790.84, 125,302.40 and 54,979.92 is: 75,878.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,790.84 : 125,302.40 = 54,979.92 : x
  2. Step 2: Convert to fraction form
    90,790.84/125,302.40 = 54,979.92/x
  3. Step 3: Cross multiply
    90,790.84x = 125,302.40 × 54,979.92
  4. Step 4: Simplify right side
    90,790.84x = 6,889,115,927.81
  5. Step 5: Solve for x
    x = 6,889,115,927.81/90,790.84
  6. Step 6: Final answer
    x = 75,878.98

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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.