Home / 77,500.36-115,456.55-74,678.32

Finding the Fourth Proportional to 77,500.36, 115,456.55 and 74,678.32

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Solution

The fourth proportional to 77,500.36, 115,456.55 and 74,678.32 is: 111,252.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,500.36 : 115,456.55 = 74,678.32 : x
  2. Step 2: Convert to fraction form
    77,500.36/115,456.55 = 74,678.32/x
  3. Step 3: Cross multiply
    77,500.36x = 115,456.55 × 74,678.32
  4. Step 4: Simplify right side
    77,500.36x = 8,622,101,187.00
  5. Step 5: Solve for x
    x = 8,622,101,187.00/77,500.36
  6. Step 6: Final answer
    x = 111,252.40

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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.