Home / 56,728.56-78,234.48-35,509.80

Finding the Fourth Proportional to 56,728.56, 78,234.48 and 35,509.80

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Solution

The fourth proportional to 56,728.56, 78,234.48 and 35,509.80 is: 48,971.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,728.56 : 78,234.48 = 35,509.80 : x
  2. Step 2: Convert to fraction form
    56,728.56/78,234.48 = 35,509.80/x
  3. Step 3: Cross multiply
    56,728.56x = 78,234.48 × 35,509.80
  4. Step 4: Simplify right side
    56,728.56x = 2,778,090,737.90
  5. Step 5: Solve for x
    x = 2,778,090,737.90/56,728.56
  6. Step 6: Final answer
    x = 48,971.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.