Home / 74,131.55-102,301.52-40,140.03

Finding the Fourth Proportional to 74,131.55, 102,301.52 and 40,140.03

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Solution

The fourth proportional to 74,131.55, 102,301.52 and 40,140.03 is: 55,393.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,131.55 : 102,301.52 = 40,140.03 : x
  2. Step 2: Convert to fraction form
    74,131.55/102,301.52 = 40,140.03/x
  3. Step 3: Cross multiply
    74,131.55x = 102,301.52 × 40,140.03
  4. Step 4: Simplify right side
    74,131.55x = 4,106,386,182.20
  5. Step 5: Solve for x
    x = 4,106,386,182.20/74,131.55
  6. Step 6: Final answer
    x = 55,393.24

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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.