Home / 77,215.32-115,802.04-27,288.78

Finding the Fourth Proportional to 77,215.32, 115,802.04 and 27,288.78

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Solution

The fourth proportional to 77,215.32, 115,802.04 and 27,288.78 is: 40,925.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,215.32 : 115,802.04 = 27,288.78 : x
  2. Step 2: Convert to fraction form
    77,215.32/115,802.04 = 27,288.78/x
  3. Step 3: Cross multiply
    77,215.32x = 115,802.04 × 27,288.78
  4. Step 4: Simplify right side
    77,215.32x = 3,160,096,393.11
  5. Step 5: Solve for x
    x = 3,160,096,393.11/77,215.32
  6. Step 6: Final answer
    x = 40,925.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.