Home / 77,578.08-107,120.88-63,240.16

Finding the Fourth Proportional to 77,578.08, 107,120.88 and 63,240.16

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Solution

The fourth proportional to 77,578.08, 107,120.88 and 63,240.16 is: 87,322.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,578.08 : 107,120.88 = 63,240.16 : x
  2. Step 2: Convert to fraction form
    77,578.08/107,120.88 = 63,240.16/x
  3. Step 3: Cross multiply
    77,578.08x = 107,120.88 × 63,240.16
  4. Step 4: Simplify right side
    77,578.08x = 6,774,341,590.54
  5. Step 5: Solve for x
    x = 6,774,341,590.54/77,578.08
  6. Step 6: Final answer
    x = 87,322.88

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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.