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Finding the Fourth Proportional to 77,635.68, 107,124.15 and 43,639.68

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Solution

The fourth proportional to 77,635.68, 107,124.15 and 43,639.68 is: 60,215.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,635.68 : 107,124.15 = 43,639.68 : x
  2. Step 2: Convert to fraction form
    77,635.68/107,124.15 = 43,639.68/x
  3. Step 3: Cross multiply
    77,635.68x = 107,124.15 × 43,639.68
  4. Step 4: Simplify right side
    77,635.68x = 4,674,863,626.27
  5. Step 5: Solve for x
    x = 4,674,863,626.27/77,635.68
  6. Step 6: Final answer
    x = 60,215.40

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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.