Home / 74,981.42-103,474.56-40,990.31

Finding the Fourth Proportional to 74,981.42, 103,474.56 and 40,990.31

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Solution

The fourth proportional to 74,981.42, 103,474.56 and 40,990.31 is: 56,566.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,981.42 : 103,474.56 = 40,990.31 : x
  2. Step 2: Convert to fraction form
    74,981.42/103,474.56 = 40,990.31/x
  3. Step 3: Cross multiply
    74,981.42x = 103,474.56 × 40,990.31
  4. Step 4: Simplify right side
    74,981.42x = 4,241,453,569.19
  5. Step 5: Solve for x
    x = 4,241,453,569.19/74,981.42
  6. Step 6: Final answer
    x = 56,566.73

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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.