Home / 91,218.24-136,715.58-51,808.50

Finding the Fourth Proportional to 91,218.24, 136,715.58 and 51,808.50

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Solution

The fourth proportional to 91,218.24, 136,715.58 and 51,808.50 is: 77,649.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,218.24 : 136,715.58 = 51,808.50 : x
  2. Step 2: Convert to fraction form
    91,218.24/136,715.58 = 51,808.50/x
  3. Step 3: Cross multiply
    91,218.24x = 136,715.58 × 51,808.50
  4. Step 4: Simplify right side
    91,218.24x = 7,083,029,126.43
  5. Step 5: Solve for x
    x = 7,083,029,126.43/91,218.24
  6. Step 6: Final answer
    x = 77,649.26

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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.