Home / 56,621.20-84,931.80-53,165.20

Finding the Fourth Proportional to 56,621.20, 84,931.80 and 53,165.20

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Solution

The fourth proportional to 56,621.20, 84,931.80 and 53,165.20 is: 79,747.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,621.20 : 84,931.80 = 53,165.20 : x
  2. Step 2: Convert to fraction form
    56,621.20/84,931.80 = 53,165.20/x
  3. Step 3: Cross multiply
    56,621.20x = 84,931.80 × 53,165.20
  4. Step 4: Simplify right side
    56,621.20x = 4,515,416,133.36
  5. Step 5: Solve for x
    x = 4,515,416,133.36/56,621.20
  6. Step 6: Final answer
    x = 79,747.80

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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.