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Finding the Fourth Proportional to 77,658.66, 116,488.16 and 21,498.93

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Solution

The fourth proportional to 77,658.66, 116,488.16 and 21,498.93 is: 32,248.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,658.66 : 116,488.16 = 21,498.93 : x
  2. Step 2: Convert to fraction form
    77,658.66/116,488.16 = 21,498.93/x
  3. Step 3: Cross multiply
    77,658.66x = 116,488.16 × 21,498.93
  4. Step 4: Simplify right side
    77,658.66x = 2,504,370,690.17
  5. Step 5: Solve for x
    x = 2,504,370,690.17/77,658.66
  6. Step 6: Final answer
    x = 32,248.44

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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.