Home / 51,388.86-70,915.32-31,246.32

Finding the Fourth Proportional to 51,388.86, 70,915.32 and 31,246.32

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Solution

The fourth proportional to 51,388.86, 70,915.32 and 31,246.32 is: 43,119.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,388.86 : 70,915.32 = 31,246.32 : x
  2. Step 2: Convert to fraction form
    51,388.86/70,915.32 = 31,246.32/x
  3. Step 3: Cross multiply
    51,388.86x = 70,915.32 × 31,246.32
  4. Step 4: Simplify right side
    51,388.86x = 2,215,842,781.62
  5. Step 5: Solve for x
    x = 2,215,842,781.62/51,388.86
  6. Step 6: Final answer
    x = 43,119.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.