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Finding the Fourth Proportional to 68,347.40, 102,521.10 and 57,288.20

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Solution

The fourth proportional to 68,347.40, 102,521.10 and 57,288.20 is: 85,932.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,347.40 : 102,521.10 = 57,288.20 : x
  2. Step 2: Convert to fraction form
    68,347.40/102,521.10 = 57,288.20/x
  3. Step 3: Cross multiply
    68,347.40x = 102,521.10 × 57,288.20
  4. Step 4: Simplify right side
    68,347.40x = 5,873,249,281.02
  5. Step 5: Solve for x
    x = 5,873,249,281.02/68,347.40
  6. Step 6: Final answer
    x = 85,932.30

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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.