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Finding the Fourth Proportional to 82,029.80, 112,956.90 and 76,075.80

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Solution

The fourth proportional to 82,029.80, 112,956.90 and 76,075.80 is: 104,758.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,029.80 : 112,956.90 = 76,075.80 : x
  2. Step 2: Convert to fraction form
    82,029.80/112,956.90 = 76,075.80/x
  3. Step 3: Cross multiply
    82,029.80x = 112,956.90 × 76,075.80
  4. Step 4: Simplify right side
    82,029.80x = 8,593,286,533.02
  5. Step 5: Solve for x
    x = 8,593,286,533.02/82,029.80
  6. Step 6: Final answer
    x = 104,758.11

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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.