Home / 90,811.53-136,215.93-40,856.36

Finding the Fourth Proportional to 90,811.53, 136,215.93 and 40,856.36

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Solution

The fourth proportional to 90,811.53, 136,215.93 and 40,856.36 is: 61,283.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,811.53 : 136,215.93 = 40,856.36 : x
  2. Step 2: Convert to fraction form
    90,811.53/136,215.93 = 40,856.36/x
  3. Step 3: Cross multiply
    90,811.53x = 136,215.93 × 40,856.36
  4. Step 4: Simplify right side
    90,811.53x = 5,565,286,392.74
  5. Step 5: Solve for x
    x = 5,565,286,392.74/90,811.53
  6. Step 6: Final answer
    x = 61,283.92

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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.