Home / 70,518.10-97,317.50-38,687.92

Finding the Fourth Proportional to 70,518.10, 97,317.50 and 38,687.92

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Solution

The fourth proportional to 70,518.10, 97,317.50 and 38,687.92 is: 53,390.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,518.10 : 97,317.50 = 38,687.92 : x
  2. Step 2: Convert to fraction form
    70,518.10/97,317.50 = 38,687.92/x
  3. Step 3: Cross multiply
    70,518.10x = 97,317.50 × 38,687.92
  4. Step 4: Simplify right side
    70,518.10x = 3,765,011,654.60
  5. Step 5: Solve for x
    x = 3,765,011,654.60/70,518.10
  6. Step 6: Final answer
    x = 53,390.71

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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.