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Finding the Fourth Proportional to 56,423.80, 84,635.70 and 53,143.30

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Solution

The fourth proportional to 56,423.80, 84,635.70 and 53,143.30 is: 79,714.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,423.80 : 84,635.70 = 53,143.30 : x
  2. Step 2: Convert to fraction form
    56,423.80/84,635.70 = 53,143.30/x
  3. Step 3: Cross multiply
    56,423.80x = 84,635.70 × 53,143.30
  4. Step 4: Simplify right side
    56,423.80x = 4,497,820,395.81
  5. Step 5: Solve for x
    x = 4,497,820,395.81/56,423.80
  6. Step 6: Final answer
    x = 79,714.95

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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.