Home / 77,501.36-115,458.04-74,679.32

Finding the Fourth Proportional to 77,501.36, 115,458.04 and 74,679.32

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Solution

The fourth proportional to 77,501.36, 115,458.04 and 74,679.32 is: 111,253.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,501.36 : 115,458.04 = 74,679.32 : x
  2. Step 2: Convert to fraction form
    77,501.36/115,458.04 = 74,679.32/x
  3. Step 3: Cross multiply
    77,501.36x = 115,458.04 × 74,679.32
  4. Step 4: Simplify right side
    77,501.36x = 8,622,327,915.73
  5. Step 5: Solve for x
    x = 8,622,327,915.73/77,501.36
  6. Step 6: Final answer
    x = 111,253.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.