Home / 51,186.69-76,780.02-20,000.07

Finding the Fourth Proportional to 51,186.69, 76,780.02 and 20,000.07

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Solution

The fourth proportional to 51,186.69, 76,780.02 and 20,000.07 is: 30,000.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,186.69 : 76,780.02 = 20,000.07 : x
  2. Step 2: Convert to fraction form
    51,186.69/76,780.02 = 20,000.07/x
  3. Step 3: Cross multiply
    51,186.69x = 76,780.02 × 20,000.07
  4. Step 4: Simplify right side
    51,186.69x = 1,535,605,774.60
  5. Step 5: Solve for x
    x = 1,535,605,774.60/51,186.69
  6. Step 6: Final answer
    x = 30,000.10

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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.