Home / 56,278.81-84,429.51-20,740.31

Finding the Fourth Proportional to 56,278.81, 84,429.51 and 20,740.31

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Solution

The fourth proportional to 56,278.81, 84,429.51 and 20,740.31 is: 31,114.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,278.81 : 84,429.51 = 20,740.31 : x
  2. Step 2: Convert to fraction form
    56,278.81/84,429.51 = 20,740.31/x
  3. Step 3: Cross multiply
    56,278.81x = 84,429.51 × 20,740.31
  4. Step 4: Simplify right side
    56,278.81x = 1,751,094,425.03
  5. Step 5: Solve for x
    x = 1,751,094,425.03/56,278.81
  6. Step 6: Final answer
    x = 31,114.63

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1.5x scale

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.