Home / 74,772.81-103,186.62-40,781.34

Finding the Fourth Proportional to 74,772.81, 103,186.62 and 40,781.34

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Solution

The fourth proportional to 74,772.81, 103,186.62 and 40,781.34 is: 56,278.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,772.81 : 103,186.62 = 40,781.34 : x
  2. Step 2: Convert to fraction form
    74,772.81/103,186.62 = 40,781.34/x
  3. Step 3: Cross multiply
    74,772.81x = 103,186.62 × 40,781.34
  4. Step 4: Simplify right side
    74,772.81x = 4,208,088,633.67
  5. Step 5: Solve for x
    x = 4,208,088,633.67/74,772.81
  6. Step 6: Final answer
    x = 56,278.33

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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.