Home / 91,045.13-136,591.99-28,715.63

Finding the Fourth Proportional to 91,045.13, 136,591.99 and 28,715.63

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Solution

The fourth proportional to 91,045.13, 136,591.99 and 28,715.63 is: 43,081.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,045.13 : 136,591.99 = 28,715.63 : x
  2. Step 2: Convert to fraction form
    91,045.13/136,591.99 = 28,715.63/x
  3. Step 3: Cross multiply
    91,045.13x = 136,591.99 × 28,715.63
  4. Step 4: Simplify right side
    91,045.13x = 3,922,325,045.80
  5. Step 5: Solve for x
    x = 3,922,325,045.80/91,045.13
  6. Step 6: Final answer
    x = 43,081.11

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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.