Home / 77,727.12-107,213.40-45,894.12

Finding the Fourth Proportional to 77,727.12, 107,213.40 and 45,894.12

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Solution

The fourth proportional to 77,727.12, 107,213.40 and 45,894.12 is: 63,304.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,727.12 : 107,213.40 = 45,894.12 : x
  2. Step 2: Convert to fraction form
    77,727.12/107,213.40 = 45,894.12/x
  3. Step 3: Cross multiply
    77,727.12x = 107,213.40 × 45,894.12
  4. Step 4: Simplify right side
    77,727.12x = 4,920,464,645.21
  5. Step 5: Solve for x
    x = 4,920,464,645.21/77,727.12
  6. Step 6: Final answer
    x = 63,304.35

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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.