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Finding the Fourth Proportional to 81,445.77, 112,393.74 and 45,635.67

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Solution

The fourth proportional to 81,445.77, 112,393.74 and 45,635.67 is: 62,976.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,445.77 : 112,393.74 = 45,635.67 : x
  2. Step 2: Convert to fraction form
    81,445.77/112,393.74 = 45,635.67/x
  3. Step 3: Cross multiply
    81,445.77x = 112,393.74 × 45,635.67
  4. Step 4: Simplify right side
    81,445.77x = 5,129,163,628.71
  5. Step 5: Solve for x
    x = 5,129,163,628.71/81,445.77
  6. Step 6: Final answer
    x = 62,976.43

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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.