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Finding the Fourth Proportional to 70,828.86, 97,760.43 and 40,613.64

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Solution

The fourth proportional to 70,828.86, 97,760.43 and 40,613.64 is: 56,056.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,828.86 : 97,760.43 = 40,613.64 : x
  2. Step 2: Convert to fraction form
    70,828.86/97,760.43 = 40,613.64/x
  3. Step 3: Cross multiply
    70,828.86x = 97,760.43 × 40,613.64
  4. Step 4: Simplify right side
    70,828.86x = 3,970,406,910.27
  5. Step 5: Solve for x
    x = 3,970,406,910.27/70,828.86
  6. Step 6: Final answer
    x = 56,056.34

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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.