Home / 74,085.12-102,236.42-42,254.55

Finding the Fourth Proportional to 74,085.12, 102,236.42 and 42,254.55

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Solution

The fourth proportional to 74,085.12, 102,236.42 and 42,254.55 is: 58,310.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,085.12 : 102,236.42 = 42,254.55 : x
  2. Step 2: Convert to fraction form
    74,085.12/102,236.42 = 42,254.55/x
  3. Step 3: Cross multiply
    74,085.12x = 102,236.42 × 42,254.55
  4. Step 4: Simplify right side
    74,085.12x = 4,319,953,709.44
  5. Step 5: Solve for x
    x = 4,319,953,709.44/74,085.12
  6. Step 6: Final answer
    x = 58,310.68

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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.