Home / 74,407.12-102,682.57-40,416.28

Finding the Fourth Proportional to 74,407.12, 102,682.57 and 40,416.28

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Solution

The fourth proportional to 74,407.12, 102,682.57 and 40,416.28 is: 55,774.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,407.12 : 102,682.57 = 40,416.28 : x
  2. Step 2: Convert to fraction form
    74,407.12/102,682.57 = 40,416.28/x
  3. Step 3: Cross multiply
    74,407.12x = 102,682.57 × 40,416.28
  4. Step 4: Simplify right side
    74,407.12x = 4,150,046,885.79
  5. Step 5: Solve for x
    x = 4,150,046,885.79/74,407.12
  6. Step 6: Final answer
    x = 55,774.87

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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.