Home / 74,699.60-103,085.47-40,708.10

Finding the Fourth Proportional to 74,699.60, 103,085.47 and 40,708.10

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Solution

The fourth proportional to 74,699.60, 103,085.47 and 40,708.10 is: 56,177.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,699.60 : 103,085.47 = 40,708.10 : x
  2. Step 2: Convert to fraction form
    74,699.60/103,085.47 = 40,708.10/x
  3. Step 3: Cross multiply
    74,699.60x = 103,085.47 × 40,708.10
  4. Step 4: Simplify right side
    74,699.60x = 4,196,413,414.48
  5. Step 5: Solve for x
    x = 4,196,413,414.48/74,699.60
  6. Step 6: Final answer
    x = 56,177.19

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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.