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Finding the Fourth Proportional to 70,861.47, 97,788.81 and 39,030.37

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Solution

The fourth proportional to 70,861.47, 97,788.81 and 39,030.37 is: 53,861.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,861.47 : 97,788.81 = 39,030.37 : x
  2. Step 2: Convert to fraction form
    70,861.47/97,788.81 = 39,030.37/x
  3. Step 3: Cross multiply
    70,861.47x = 97,788.81 × 39,030.37
  4. Step 4: Simplify right side
    70,861.47x = 3,816,732,939.68
  5. Step 5: Solve for x
    x = 3,816,732,939.68/70,861.47
  6. Step 6: Final answer
    x = 53,861.90

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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.