Home / 82,290,742.16-123,435,867.20-20,879,782.16

Finding the Fourth Proportional to 82,290,742.16, 123,435,867.20 and 20,879,782.16

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Solution

The fourth proportional to 82,290,742.16, 123,435,867.20 and 20,879,782.16 is: 31,319,610.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,290,742.16 : 123,435,867.20 = 20,879,782.16 : x
  2. Step 2: Convert to fraction form
    82,290,742.16/123,435,867.20 = 20,879,782.16/x
  3. Step 3: Cross multiply
    82,290,742.16x = 123,435,867.20 × 20,879,782.16
  4. Step 4: Simplify right side
    82,290,742.16x = 2,577,314,017,145,111
  5. Step 5: Solve for x
    x = 2,577,314,017,145,111/82,290,742.16
  6. Step 6: Final answer
    x = 31,319,610.80

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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.