Home / 77,981.64-116,960.26-25,390.77

Finding the Fourth Proportional to 77,981.64, 116,960.26 and 25,390.77

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Solution

The fourth proportional to 77,981.64, 116,960.26 and 25,390.77 is: 38,082.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,981.64 : 116,960.26 = 25,390.77 : x
  2. Step 2: Convert to fraction form
    77,981.64/116,960.26 = 25,390.77/x
  3. Step 3: Cross multiply
    77,981.64x = 116,960.26 × 25,390.77
  4. Step 4: Simplify right side
    77,981.64x = 2,969,711,060.80
  5. Step 5: Solve for x
    x = 2,969,711,060.80/77,981.64
  6. Step 6: Final answer
    x = 38,082.18

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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.