Home / 56,303.28-84,420.80-28,190.64

Finding the Fourth Proportional to 56,303.28, 84,420.80 and 28,190.64

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Solution

The fourth proportional to 56,303.28, 84,420.80 and 28,190.64 is: 42,268.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,303.28 : 84,420.80 = 28,190.64 : x
  2. Step 2: Convert to fraction form
    56,303.28/84,420.80 = 28,190.64/x
  3. Step 3: Cross multiply
    56,303.28x = 84,420.80 × 28,190.64
  4. Step 4: Simplify right side
    56,303.28x = 2,379,876,381.31
  5. Step 5: Solve for x
    x = 2,379,876,381.31/56,303.28
  6. Step 6: Final answer
    x = 42,268.88

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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.