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Finding the Fourth Proportional to 68,151.84, 94,075.20 and 39,866.64

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Solution

The fourth proportional to 68,151.84, 94,075.20 and 39,866.64 is: 55,030.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,151.84 : 94,075.20 = 39,866.64 : x
  2. Step 2: Convert to fraction form
    68,151.84/94,075.20 = 39,866.64/x
  3. Step 3: Cross multiply
    68,151.84x = 94,075.20 × 39,866.64
  4. Step 4: Simplify right side
    68,151.84x = 3,750,462,131.33
  5. Step 5: Solve for x
    x = 3,750,462,131.33/68,151.84
  6. Step 6: Final answer
    x = 55,030.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.