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Finding the Fourth Proportional to 78,359.40, 108,134.82 and 44,818.92

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Solution

The fourth proportional to 78,359.40, 108,134.82 and 44,818.92 is: 61,849.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,359.40 : 108,134.82 = 44,818.92 : x
  2. Step 2: Convert to fraction form
    78,359.40/108,134.82 = 44,818.92/x
  3. Step 3: Cross multiply
    78,359.40x = 108,134.82 × 44,818.92
  4. Step 4: Simplify right side
    78,359.40x = 4,846,485,846.79
  5. Step 5: Solve for x
    x = 4,846,485,846.79/78,359.40
  6. Step 6: Final answer
    x = 61,849.45

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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.