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Finding the Fourth Proportional to 77,331.84, 116,043.84 and 28,087.68

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Solution

The fourth proportional to 77,331.84, 116,043.84 and 28,087.68 is: 42,148.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,331.84 : 116,043.84 = 28,087.68 : x
  2. Step 2: Convert to fraction form
    77,331.84/116,043.84 = 28,087.68/x
  3. Step 3: Cross multiply
    77,331.84x = 116,043.84 × 28,087.68
  4. Step 4: Simplify right side
    77,331.84x = 3,259,402,243.89
  5. Step 5: Solve for x
    x = 3,259,402,243.89/77,331.84
  6. Step 6: Final answer
    x = 42,148.26

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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.