Home / 40,972,719.80-61,459,079.70-20,565,385.40

Finding the Fourth Proportional to 40,972,719.80, 61,459,079.70 and 20,565,385.40

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Solution

The fourth proportional to 40,972,719.80, 61,459,079.70 and 20,565,385.40 is: 30,848,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,972,719.80 : 61,459,079.70 = 20,565,385.40 : x
  2. Step 2: Convert to fraction form
    40,972,719.80/61,459,079.70 = 20,565,385.40/x
  3. Step 3: Cross multiply
    40,972,719.80x = 61,459,079.70 × 20,565,385.40
  4. Step 4: Simplify right side
    40,972,719.80x = 1,263,929,660,359,816.25
  5. Step 5: Solve for x
    x = 1,263,929,660,359,816.25/40,972,719.80
  6. Step 6: Final answer
    x = 30,848,078.10

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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.