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Finding the Fourth Proportional to 70,995.17, 106,485.66 and 28,877.73

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Solution

The fourth proportional to 70,995.17, 106,485.66 and 28,877.73 is: 43,313.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,995.17 : 106,485.66 = 28,877.73 : x
  2. Step 2: Convert to fraction form
    70,995.17/106,485.66 = 28,877.73/x
  3. Step 3: Cross multiply
    70,995.17x = 106,485.66 × 28,877.73
  4. Step 4: Simplify right side
    70,995.17x = 3,075,064,138.35
  5. Step 5: Solve for x
    x = 3,075,064,138.35/70,995.17
  6. Step 6: Final answer
    x = 43,313.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.