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Finding the Fourth Proportional to 70,289.70, 96,998.49 and 38,457.87

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Solution

The fourth proportional to 70,289.70, 96,998.49 and 38,457.87 is: 53,071.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,289.70 : 96,998.49 = 38,457.87 : x
  2. Step 2: Convert to fraction form
    70,289.70/96,998.49 = 38,457.87/x
  3. Step 3: Cross multiply
    70,289.70x = 96,998.49 × 38,457.87
  4. Step 4: Simplify right side
    70,289.70x = 3,730,355,318.62
  5. Step 5: Solve for x
    x = 3,730,355,318.62/70,289.70
  6. Step 6: Final answer
    x = 53,071.15

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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.