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Finding the Fourth Proportional to 91,571.08, 137,444.10 and 56,579.08

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Solution

The fourth proportional to 91,571.08, 137,444.10 and 56,579.08 is: 84,922.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,571.08 : 137,444.10 = 56,579.08 : x
  2. Step 2: Convert to fraction form
    91,571.08/137,444.10 = 56,579.08/x
  3. Step 3: Cross multiply
    91,571.08x = 137,444.10 × 56,579.08
  4. Step 4: Simplify right side
    91,571.08x = 7,776,460,729.43
  5. Step 5: Solve for x
    x = 7,776,460,729.43/91,571.08
  6. Step 6: Final answer
    x = 84,922.67

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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.