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Finding the Fourth Proportional to 84,758.70, 116,983.14 and 56,078.93

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Solution

The fourth proportional to 84,758.70, 116,983.14 and 56,078.93 is: 77,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,758.70 : 116,983.14 = 56,078.93 : x
  2. Step 2: Convert to fraction form
    84,758.70/116,983.14 = 56,078.93/x
  3. Step 3: Cross multiply
    84,758.70x = 116,983.14 × 56,078.93
  4. Step 4: Simplify right side
    84,758.70x = 6,560,289,401.40
  5. Step 5: Solve for x
    x = 6,560,289,401.40/84,758.70
  6. Step 6: Final answer
    x = 77,399.60

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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.