Home / 45,128.59-67,652.70-21,421.51

Finding the Fourth Proportional to 45,128.59, 67,652.70 and 21,421.51

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Solution

The fourth proportional to 45,128.59, 67,652.70 and 21,421.51 is: 32,113.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,128.59 : 67,652.70 = 21,421.51 : x
  2. Step 2: Convert to fraction form
    45,128.59/67,652.70 = 21,421.51/x
  3. Step 3: Cross multiply
    45,128.59x = 67,652.70 × 21,421.51
  4. Step 4: Simplify right side
    45,128.59x = 1,449,222,989.58
  5. Step 5: Solve for x
    x = 1,449,222,989.58/45,128.59
  6. Step 6: Final answer
    x = 32,113.19

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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.