Home / 78,738.47-118,107.60-19,574.13

Finding the Fourth Proportional to 78,738.47, 118,107.60 and 19,574.13

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Solution

The fourth proportional to 78,738.47, 118,107.60 and 19,574.13 is: 29,361.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,738.47 : 118,107.60 = 19,574.13 : x
  2. Step 2: Convert to fraction form
    78,738.47/118,107.60 = 19,574.13/x
  3. Step 3: Cross multiply
    78,738.47x = 118,107.60 × 19,574.13
  4. Step 4: Simplify right side
    78,738.47x = 2,311,853,516.39
  5. Step 5: Solve for x
    x = 2,311,853,516.39/78,738.47
  6. Step 6: Final answer
    x = 29,361.17

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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.