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Finding the Fourth Proportional to 76,228.40, 114,472.20 and 56,529.20

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Solution

The fourth proportional to 76,228.40, 114,472.20 and 56,529.20 is: 84,889.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,228.40 : 114,472.20 = 56,529.20 : x
  2. Step 2: Convert to fraction form
    76,228.40/114,472.20 = 56,529.20/x
  3. Step 3: Cross multiply
    76,228.40x = 114,472.20 × 56,529.20
  4. Step 4: Simplify right side
    76,228.40x = 6,471,021,888.24
  5. Step 5: Solve for x
    x = 6,471,021,888.24/76,228.40
  6. Step 6: Final answer
    x = 84,889.91

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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.