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Finding the Fourth Proportional to 101,674.85, 140,311.31 and 56,359.67

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Solution

The fourth proportional to 101,674.85, 140,311.31 and 56,359.67 is: 77,776.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,674.85 : 140,311.31 = 56,359.67 : x
  2. Step 2: Convert to fraction form
    101,674.85/140,311.31 = 56,359.67/x
  3. Step 3: Cross multiply
    101,674.85x = 140,311.31 × 56,359.67
  4. Step 4: Simplify right side
    101,674.85x = 7,907,898,145.51
  5. Step 5: Solve for x
    x = 7,907,898,145.51/101,674.85
  6. Step 6: Final answer
    x = 77,776.35

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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.