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Finding the Fourth Proportional to 85,775.70, 128,809.35 and 63,614.10

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Solution

The fourth proportional to 85,775.70, 128,809.35 and 63,614.10 is: 95,529.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,775.70 : 128,809.35 = 63,614.10 : x
  2. Step 2: Convert to fraction form
    85,775.70/128,809.35 = 63,614.10/x
  3. Step 3: Cross multiply
    85,775.70x = 128,809.35 × 63,614.10
  4. Step 4: Simplify right side
    85,775.70x = 8,194,090,871.84
  5. Step 5: Solve for x
    x = 8,194,090,871.84/85,775.70
  6. Step 6: Final answer
    x = 95,529.28

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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.