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Finding the Fourth Proportional to 77,960.80, 116,948.58 and 21,800.90

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Solution

The fourth proportional to 77,960.80, 116,948.58 and 21,800.90 is: 32,703.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,960.80 : 116,948.58 = 21,800.90 : x
  2. Step 2: Convert to fraction form
    77,960.80/116,948.58 = 21,800.90/x
  3. Step 3: Cross multiply
    77,960.80x = 116,948.58 × 21,800.90
  4. Step 4: Simplify right side
    77,960.80x = 2,549,584,297.72
  5. Step 5: Solve for x
    x = 2,549,584,297.72/77,960.80
  6. Step 6: Final answer
    x = 32,703.41

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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.