Home / 70,790.20-97,692.40-38,961.12

Finding the Fourth Proportional to 70,790.20, 97,692.40 and 38,961.12

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Solution

The fourth proportional to 70,790.20, 97,692.40 and 38,961.12 is: 53,767.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,790.20 : 97,692.40 = 38,961.12 : x
  2. Step 2: Convert to fraction form
    70,790.20/97,692.40 = 38,961.12/x
  3. Step 3: Cross multiply
    70,790.20x = 97,692.40 × 38,961.12
  4. Step 4: Simplify right side
    70,790.20x = 3,806,205,319.49
  5. Step 5: Solve for x
    x = 3,806,205,319.49/70,790.20
  6. Step 6: Final answer
    x = 53,767.40

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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.