Home / 42,203,800.80-63,305,701.20-20,680,440.30

Finding the Fourth Proportional to 42,203,800.80, 63,305,701.20 and 20,680,440.30

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Solution

The fourth proportional to 42,203,800.80, 63,305,701.20 and 20,680,440.30 is: 31,020,660.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,203,800.80 : 63,305,701.20 = 20,680,440.30 : x
  2. Step 2: Convert to fraction form
    42,203,800.80/63,305,701.20 = 20,680,440.30/x
  3. Step 3: Cross multiply
    42,203,800.80x = 63,305,701.20 × 20,680,440.30
  4. Step 4: Simplify right side
    42,203,800.80x = 1,309,189,774,316,238.50
  5. Step 5: Solve for x
    x = 1,309,189,774,316,238.50/42,203,800.80
  6. Step 6: Final answer
    x = 31,020,660.45

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Similar ratio
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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.