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Finding the Fourth Proportional to 101,753.87, 140,411.07 and 56,431.72

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Solution

The fourth proportional to 101,753.87, 140,411.07 and 56,431.72 is: 77,870.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,753.87 : 140,411.07 = 56,431.72 : x
  2. Step 2: Convert to fraction form
    101,753.87/140,411.07 = 56,431.72/x
  3. Step 3: Cross multiply
    101,753.87x = 140,411.07 × 56,431.72
  4. Step 4: Simplify right side
    101,753.87x = 7,923,638,362.65
  5. Step 5: Solve for x
    x = 7,923,638,362.65/101,753.87
  6. Step 6: Final answer
    x = 77,870.63

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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.