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Finding the Fourth Proportional to 82,835.60, 124,253.40 and 53,286.80

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Solution

The fourth proportional to 82,835.60, 124,253.40 and 53,286.80 is: 79,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,835.60 : 124,253.40 = 53,286.80 : x
  2. Step 2: Convert to fraction form
    82,835.60/124,253.40 = 53,286.80/x
  3. Step 3: Cross multiply
    82,835.60x = 124,253.40 × 53,286.80
  4. Step 4: Simplify right side
    82,835.60x = 6,621,066,075.12
  5. Step 5: Solve for x
    x = 6,621,066,075.12/82,835.60
  6. Step 6: Final answer
    x = 79,930.20

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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.