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Finding the Fourth Proportional to 64,379.16, 88,803.63 and 40,486.20

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Solution

The fourth proportional to 64,379.16, 88,803.63 and 40,486.20 is: 55,846.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,379.16 : 88,803.63 = 40,486.20 : x
  2. Step 2: Convert to fraction form
    64,379.16/88,803.63 = 40,486.20/x
  3. Step 3: Cross multiply
    64,379.16x = 88,803.63 × 40,486.20
  4. Step 4: Simplify right side
    64,379.16x = 3,595,321,524.91
  5. Step 5: Solve for x
    x = 3,595,321,524.91/64,379.16
  6. Step 6: Final answer
    x = 55,846.05

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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.