Home / 77,834.09-107,419.13-47,639.51

Finding the Fourth Proportional to 77,834.09, 107,419.13 and 47,639.51

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Solution

The fourth proportional to 77,834.09, 107,419.13 and 47,639.51 is: 65,747.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,834.09 : 107,419.13 = 47,639.51 : x
  2. Step 2: Convert to fraction form
    77,834.09/107,419.13 = 47,639.51/x
  3. Step 3: Cross multiply
    77,834.09x = 107,419.13 × 47,639.51
  4. Step 4: Simplify right side
    77,834.09x = 5,117,393,942.53
  5. Step 5: Solve for x
    x = 5,117,393,942.53/77,834.09
  6. Step 6: Final answer
    x = 65,747.47

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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.