Home / 78,858.05-118,288.28-26,267.58

Finding the Fourth Proportional to 78,858.05, 118,288.28 and 26,267.58

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Solution

The fourth proportional to 78,858.05, 118,288.28 and 26,267.58 is: 39,401.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,858.05 : 118,288.28 = 26,267.58 : x
  2. Step 2: Convert to fraction form
    78,858.05/118,288.28 = 26,267.58/x
  3. Step 3: Cross multiply
    78,858.05x = 118,288.28 × 26,267.58
  4. Step 4: Simplify right side
    78,858.05x = 3,107,146,923.63
  5. Step 5: Solve for x
    x = 3,107,146,923.63/78,858.05
  6. Step 6: Final answer
    x = 39,401.77

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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.