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Finding the Fourth Proportional to 77,958.80, 116,945.58 and 21,798.91

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Solution

The fourth proportional to 77,958.80, 116,945.58 and 21,798.91 is: 32,700.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,958.80 : 116,945.58 = 21,798.91 : x
  2. Step 2: Convert to fraction form
    77,958.80/116,945.58 = 21,798.91/x
  3. Step 3: Cross multiply
    77,958.80x = 116,945.58 × 21,798.91
  4. Step 4: Simplify right side
    77,958.80x = 2,549,285,712.93
  5. Step 5: Solve for x
    x = 2,549,285,712.93/77,958.80
  6. Step 6: Final answer
    x = 32,700.42

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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.