Home / 74,701.55-103,085.14-40,709.31

Finding the Fourth Proportional to 74,701.55, 103,085.14 and 40,709.31

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Solution

The fourth proportional to 74,701.55, 103,085.14 and 40,709.31 is: 56,177.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,701.55 : 103,085.14 = 40,709.31 : x
  2. Step 2: Convert to fraction form
    74,701.55/103,085.14 = 40,709.31/x
  3. Step 3: Cross multiply
    74,701.55x = 103,085.14 × 40,709.31
  4. Step 4: Simplify right side
    74,701.55x = 4,196,524,717.11
  5. Step 5: Solve for x
    x = 4,196,524,717.11/74,701.55
  6. Step 6: Final answer
    x = 56,177.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.