Home / 53,781.20-74,131.80-36,548.55

Finding the Fourth Proportional to 53,781.20, 74,131.80 and 36,548.55

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Solution

The fourth proportional to 53,781.20, 74,131.80 and 36,548.55 is: 50,378.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,781.20 : 74,131.80 = 36,548.55 : x
  2. Step 2: Convert to fraction form
    53,781.20/74,131.80 = 36,548.55/x
  3. Step 3: Cross multiply
    53,781.20x = 74,131.80 × 36,548.55
  4. Step 4: Simplify right side
    53,781.20x = 2,709,409,798.89
  5. Step 5: Solve for x
    x = 2,709,409,798.89/53,781.20
  6. Step 6: Final answer
    x = 50,378.39

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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.