Home / 74,980.20-112,383.90-30,577.80

Finding the Fourth Proportional to 74,980.20, 112,383.90 and 30,577.80

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Solution

The fourth proportional to 74,980.20, 112,383.90 and 30,577.80 is: 45,831.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,980.20 : 112,383.90 = 30,577.80 : x
  2. Step 2: Convert to fraction form
    74,980.20/112,383.90 = 30,577.80/x
  3. Step 3: Cross multiply
    74,980.20x = 112,383.90 × 30,577.80
  4. Step 4: Simplify right side
    74,980.20x = 3,436,452,417.42
  5. Step 5: Solve for x
    x = 3,436,452,417.42/74,980.20
  6. Step 6: Final answer
    x = 45,831.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.