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Finding the Fourth Proportional to 55,574.39, 76,685.50 and 31,699.64

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Solution

The fourth proportional to 55,574.39, 76,685.50 and 31,699.64 is: 43,741.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,574.39 : 76,685.50 = 31,699.64 : x
  2. Step 2: Convert to fraction form
    55,574.39/76,685.50 = 31,699.64/x
  3. Step 3: Cross multiply
    55,574.39x = 76,685.50 × 31,699.64
  4. Step 4: Simplify right side
    55,574.39x = 2,430,902,543.20
  5. Step 5: Solve for x
    x = 2,430,902,543.20/55,574.39
  6. Step 6: Final answer
    x = 43,741.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.