Home / 71,381.10-106,956.45-45,038.70

Finding the Fourth Proportional to 71,381.10, 106,956.45 and 45,038.70

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Solution

The fourth proportional to 71,381.10, 106,956.45 and 45,038.70 is: 67,485.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,381.10 : 106,956.45 = 45,038.70 : x
  2. Step 2: Convert to fraction form
    71,381.10/106,956.45 = 45,038.70/x
  3. Step 3: Cross multiply
    71,381.10x = 106,956.45 × 45,038.70
  4. Step 4: Simplify right side
    71,381.10x = 4,817,179,464.62
  5. Step 5: Solve for x
    x = 4,817,179,464.62/71,381.10
  6. Step 6: Final answer
    x = 67,485.36

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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.