Home / 74,385.12-102,651.48-40,851.12

Finding the Fourth Proportional to 74,385.12, 102,651.48 and 40,851.12

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Solution

The fourth proportional to 74,385.12, 102,651.48 and 40,851.12 is: 56,374.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,385.12 : 102,651.48 = 40,851.12 : x
  2. Step 2: Convert to fraction form
    74,385.12/102,651.48 = 40,851.12/x
  3. Step 3: Cross multiply
    74,385.12x = 102,651.48 × 40,851.12
  4. Step 4: Simplify right side
    74,385.12x = 4,193,427,927.66
  5. Step 5: Solve for x
    x = 4,193,427,927.66/74,385.12
  6. Step 6: Final answer
    x = 56,374.55

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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.