Home / 81,774.12-122,594.16-42,342.48

Finding the Fourth Proportional to 81,774.12, 122,594.16 and 42,342.48

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Solution

The fourth proportional to 81,774.12, 122,594.16 and 42,342.48 is: 63,479.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,774.12 : 122,594.16 = 42,342.48 : x
  2. Step 2: Convert to fraction form
    81,774.12/122,594.16 = 42,342.48/x
  3. Step 3: Cross multiply
    81,774.12x = 122,594.16 × 42,342.48
  4. Step 4: Simplify right side
    81,774.12x = 5,190,940,767.92
  5. Step 5: Solve for x
    x = 5,190,940,767.92/81,774.12
  6. Step 6: Final answer
    x = 63,479.02

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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.