Home / 70,749.20-97,633.35-38,917.40

Finding the Fourth Proportional to 70,749.20, 97,633.35 and 38,917.40

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Solution

The fourth proportional to 70,749.20, 97,633.35 and 38,917.40 is: 53,705.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,749.20 : 97,633.35 = 38,917.40 : x
  2. Step 2: Convert to fraction form
    70,749.20/97,633.35 = 38,917.40/x
  3. Step 3: Cross multiply
    70,749.20x = 97,633.35 × 38,917.40
  4. Step 4: Simplify right side
    70,749.20x = 3,799,636,135.29
  5. Step 5: Solve for x
    x = 3,799,636,135.29/70,749.20
  6. Step 6: Final answer
    x = 53,705.71

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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.