Home / 81,322.38-112,225.44-45,515.70

Finding the Fourth Proportional to 81,322.38, 112,225.44 and 45,515.70

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Solution

The fourth proportional to 81,322.38, 112,225.44 and 45,515.70 is: 62,811.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,322.38 : 112,225.44 = 45,515.70 : x
  2. Step 2: Convert to fraction form
    81,322.38/112,225.44 = 45,515.70/x
  3. Step 3: Cross multiply
    81,322.38x = 112,225.44 × 45,515.70
  4. Step 4: Simplify right side
    81,322.38x = 5,108,019,459.41
  5. Step 5: Solve for x
    x = 5,108,019,459.41/81,322.38
  6. Step 6: Final answer
    x = 62,811.98

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1.5x scale

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.