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Finding the Fourth Proportional to 57,725.40, 86,588.10 and 56,429.40

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Solution

The fourth proportional to 57,725.40, 86,588.10 and 56,429.40 is: 84,644.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,725.40 : 86,588.10 = 56,429.40 : x
  2. Step 2: Convert to fraction form
    57,725.40/86,588.10 = 56,429.40/x
  3. Step 3: Cross multiply
    57,725.40x = 86,588.10 × 56,429.40
  4. Step 4: Simplify right side
    57,725.40x = 4,886,114,530.14
  5. Step 5: Solve for x
    x = 4,886,114,530.14/57,725.40
  6. Step 6: Final answer
    x = 84,644.10

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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.