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Finding the Fourth Proportional to 70,808.08, 97,747.62 and 50,403.40

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Solution

The fourth proportional to 70,808.08, 97,747.62 and 50,403.40 is: 69,579.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,808.08 : 97,747.62 = 50,403.40 : x
  2. Step 2: Convert to fraction form
    70,808.08/97,747.62 = 50,403.40/x
  3. Step 3: Cross multiply
    70,808.08x = 97,747.62 × 50,403.40
  4. Step 4: Simplify right side
    70,808.08x = 4,926,812,389.91
  5. Step 5: Solve for x
    x = 4,926,812,389.91/70,808.08
  6. Step 6: Final answer
    x = 69,579.80

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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.