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Finding the Fourth Proportional to 70,879.08, 97,827.26 and 40,684.80

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Solution

The fourth proportional to 70,879.08, 97,827.26 and 40,684.80 is: 56,153.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,879.08 : 97,827.26 = 40,684.80 : x
  2. Step 2: Convert to fraction form
    70,879.08/97,827.26 = 40,684.80/x
  3. Step 3: Cross multiply
    70,879.08x = 97,827.26 × 40,684.80
  4. Step 4: Simplify right side
    70,879.08x = 3,980,082,507.65
  5. Step 5: Solve for x
    x = 3,980,082,507.65/70,879.08
  6. Step 6: Final answer
    x = 56,153.13

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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.