Home / 74,131.59-102,302.45-40,140.86

Finding the Fourth Proportional to 74,131.59, 102,302.45 and 40,140.86

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Solution

The fourth proportional to 74,131.59, 102,302.45 and 40,140.86 is: 55,394.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,131.59 : 102,302.45 = 40,140.86 : x
  2. Step 2: Convert to fraction form
    74,131.59/102,302.45 = 40,140.86/x
  3. Step 3: Cross multiply
    74,131.59x = 102,302.45 × 40,140.86
  4. Step 4: Simplify right side
    74,131.59x = 4,106,507,610.89
  5. Step 5: Solve for x
    x = 4,106,507,610.89/74,131.59
  6. Step 6: Final answer
    x = 55,394.84

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1.5x scale

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.