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Finding the Fourth Proportional to 77,089.84, 115,647.95 and 26,486.44

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Solution

The fourth proportional to 77,089.84, 115,647.95 and 26,486.44 is: 39,734.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,089.84 : 115,647.95 = 26,486.44 : x
  2. Step 2: Convert to fraction form
    77,089.84/115,647.95 = 26,486.44/x
  3. Step 3: Cross multiply
    77,089.84x = 115,647.95 × 26,486.44
  4. Step 4: Simplify right side
    77,089.84x = 3,063,102,356.37
  5. Step 5: Solve for x
    x = 3,063,102,356.37/77,089.84
  6. Step 6: Final answer
    x = 39,734.19

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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.