Home / 85,877.10-128,837.61-26,713.28

Finding the Fourth Proportional to 85,877.10, 128,837.61 and 26,713.28

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Solution

The fourth proportional to 85,877.10, 128,837.61 and 26,713.28 is: 40,076.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,877.10 : 128,837.61 = 26,713.28 : x
  2. Step 2: Convert to fraction form
    85,877.10/128,837.61 = 26,713.28/x
  3. Step 3: Cross multiply
    85,877.10x = 128,837.61 × 26,713.28
  4. Step 4: Simplify right side
    85,877.10x = 3,441,674,506.27
  5. Step 5: Solve for x
    x = 3,441,674,506.27/85,877.10
  6. Step 6: Final answer
    x = 40,076.74

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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.