Home / 76,798.32-115,188.84-21,398.64

Finding the Fourth Proportional to 76,798.32, 115,188.84 and 21,398.64

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Solution

The fourth proportional to 76,798.32, 115,188.84 and 21,398.64 is: 32,095.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,798.32 : 115,188.84 = 21,398.64 : x
  2. Step 2: Convert to fraction form
    76,798.32/115,188.84 = 21,398.64/x
  3. Step 3: Cross multiply
    76,798.32x = 115,188.84 × 21,398.64
  4. Step 4: Simplify right side
    76,798.32x = 2,464,884,519.18
  5. Step 5: Solve for x
    x = 2,464,884,519.18/76,798.32
  6. Step 6: Final answer
    x = 32,095.55

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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.