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Finding the Fourth Proportional to 50,784.78, 70,039.47 and 30,637.26

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Solution

The fourth proportional to 50,784.78, 70,039.47 and 30,637.26 is: 42,253.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,784.78 : 70,039.47 = 30,637.26 : x
  2. Step 2: Convert to fraction form
    50,784.78/70,039.47 = 30,637.26/x
  3. Step 3: Cross multiply
    50,784.78x = 70,039.47 × 30,637.26
  4. Step 4: Simplify right side
    50,784.78x = 2,145,817,452.65
  5. Step 5: Solve for x
    x = 2,145,817,452.65/50,784.78
  6. Step 6: Final answer
    x = 42,253.16

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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.