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Finding the Fourth Proportional to 101,762.82, 140,439.78 and 56,445.12

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Solution

The fourth proportional to 101,762.82, 140,439.78 and 56,445.12 is: 77,898.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,762.82 : 140,439.78 = 56,445.12 : x
  2. Step 2: Convert to fraction form
    101,762.82/140,439.78 = 56,445.12/x
  3. Step 3: Cross multiply
    101,762.82x = 140,439.78 × 56,445.12
  4. Step 4: Simplify right side
    101,762.82x = 7,927,140,234.87
  5. Step 5: Solve for x
    x = 7,927,140,234.87/101,762.82
  6. Step 6: Final answer
    x = 77,898.20

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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.