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Finding the Fourth Proportional to 55,784.80, 83,677.20 and 43,343.20

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Solution

The fourth proportional to 55,784.80, 83,677.20 and 43,343.20 is: 65,014.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,784.80 : 83,677.20 = 43,343.20 : x
  2. Step 2: Convert to fraction form
    55,784.80/83,677.20 = 43,343.20/x
  3. Step 3: Cross multiply
    55,784.80x = 83,677.20 × 43,343.20
  4. Step 4: Simplify right side
    55,784.80x = 3,626,837,615.04
  5. Step 5: Solve for x
    x = 3,626,837,615.04/55,784.80
  6. Step 6: Final answer
    x = 65,014.80

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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.