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Finding the Fourth Proportional to 77,657.84, 116,486.92 and 21,498.12

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Solution

The fourth proportional to 77,657.84, 116,486.92 and 21,498.12 is: 32,247.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,657.84 : 116,486.92 = 21,498.12 : x
  2. Step 2: Convert to fraction form
    77,657.84/116,486.92 = 21,498.12/x
  3. Step 3: Cross multiply
    77,657.84x = 116,486.92 × 21,498.12
  4. Step 4: Simplify right side
    77,657.84x = 2,504,249,784.59
  5. Step 5: Solve for x
    x = 2,504,249,784.59/77,657.84
  6. Step 6: Final answer
    x = 32,247.22

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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.