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Finding the Fourth Proportional to 55,897.80, 83,846.70 and 51,961.20

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Solution

The fourth proportional to 55,897.80, 83,846.70 and 51,961.20 is: 77,941.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,897.80 : 83,846.70 = 51,961.20 : x
  2. Step 2: Convert to fraction form
    55,897.80/83,846.70 = 51,961.20/x
  3. Step 3: Cross multiply
    55,897.80x = 83,846.70 × 51,961.20
  4. Step 4: Simplify right side
    55,897.80x = 4,356,775,148.04
  5. Step 5: Solve for x
    x = 4,356,775,148.04/55,897.80
  6. Step 6: Final answer
    x = 77,941.80

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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.