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Finding the Fourth Proportional to 99,652.80, 149,479.20 and 57,662.40

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Solution

The fourth proportional to 99,652.80, 149,479.20 and 57,662.40 is: 86,493.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,652.80 : 149,479.20 = 57,662.40 : x
  2. Step 2: Convert to fraction form
    99,652.80/149,479.20 = 57,662.40/x
  3. Step 3: Cross multiply
    99,652.80x = 149,479.20 × 57,662.40
  4. Step 4: Simplify right side
    99,652.80x = 8,619,329,422.08
  5. Step 5: Solve for x
    x = 8,619,329,422.08/99,652.80
  6. Step 6: Final answer
    x = 86,493.60

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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.