Home / 77,415.02-116,122.71-21,255.89

Finding the Fourth Proportional to 77,415.02, 116,122.71 and 21,255.89

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Solution

The fourth proportional to 77,415.02, 116,122.71 and 21,255.89 is: 31,883.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,415.02 : 116,122.71 = 21,255.89 : x
  2. Step 2: Convert to fraction form
    77,415.02/116,122.71 = 21,255.89/x
  3. Step 3: Cross multiply
    77,415.02x = 116,122.71 × 21,255.89
  4. Step 4: Simplify right side
    77,415.02x = 2,468,291,849.80
  5. Step 5: Solve for x
    x = 2,468,291,849.80/77,415.02
  6. Step 6: Final answer
    x = 31,883.89

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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.