Home / 54,708.86-82,088.80-21,420.28

Finding the Fourth Proportional to 54,708.86, 82,088.80 and 21,420.28

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Solution

The fourth proportional to 54,708.86, 82,088.80 and 21,420.28 is: 32,140.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,708.86 : 82,088.80 = 21,420.28 : x
  2. Step 2: Convert to fraction form
    54,708.86/82,088.80 = 21,420.28/x
  3. Step 3: Cross multiply
    54,708.86x = 82,088.80 × 21,420.28
  4. Step 4: Simplify right side
    54,708.86x = 1,758,365,080.86
  5. Step 5: Solve for x
    x = 1,758,365,080.86/54,708.86
  6. Step 6: Final answer
    x = 32,140.41

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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.