Home / 77,587.36-107,103.12-68,256.16

Finding the Fourth Proportional to 77,587.36, 107,103.12 and 68,256.16

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Solution

The fourth proportional to 77,587.36, 107,103.12 and 68,256.16 is: 94,222.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,587.36 : 107,103.12 = 68,256.16 : x
  2. Step 2: Convert to fraction form
    77,587.36/107,103.12 = 68,256.16/x
  3. Step 3: Cross multiply
    77,587.36x = 107,103.12 × 68,256.16
  4. Step 4: Simplify right side
    77,587.36x = 7,310,447,695.22
  5. Step 5: Solve for x
    x = 7,310,447,695.22/77,587.36
  6. Step 6: Final answer
    x = 94,222.15

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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.