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Finding the Fourth Proportional to 77,733.84, 115,994.51 and 69,356.28

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Solution

The fourth proportional to 77,733.84, 115,994.51 and 69,356.28 is: 103,493.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,733.84 : 115,994.51 = 69,356.28 : x
  2. Step 2: Convert to fraction form
    77,733.84/115,994.51 = 69,356.28/x
  3. Step 3: Cross multiply
    77,733.84x = 115,994.51 × 69,356.28
  4. Step 4: Simplify right side
    77,733.84x = 8,044,947,714.02
  5. Step 5: Solve for x
    x = 8,044,947,714.02/77,733.84
  6. Step 6: Final answer
    x = 103,493.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.