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Finding the Fourth Proportional to 56,218.70, 84,328.05 and 40,472.30

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Solution

The fourth proportional to 56,218.70, 84,328.05 and 40,472.30 is: 60,708.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,218.70 : 84,328.05 = 40,472.30 : x
  2. Step 2: Convert to fraction form
    56,218.70/84,328.05 = 40,472.30/x
  3. Step 3: Cross multiply
    56,218.70x = 84,328.05 × 40,472.30
  4. Step 4: Simplify right side
    56,218.70x = 3,412,950,138.02
  5. Step 5: Solve for x
    x = 3,412,950,138.02/56,218.70
  6. Step 6: Final answer
    x = 60,708.45

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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.