Home / 76,392.36-105,422.58-42,403.05

Finding the Fourth Proportional to 76,392.36, 105,422.58 and 42,403.05

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Solution

The fourth proportional to 76,392.36, 105,422.58 and 42,403.05 is: 58,516.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,392.36 : 105,422.58 = 42,403.05 : x
  2. Step 2: Convert to fraction form
    76,392.36/105,422.58 = 42,403.05/x
  3. Step 3: Cross multiply
    76,392.36x = 105,422.58 × 42,403.05
  4. Step 4: Simplify right side
    76,392.36x = 4,470,238,930.87
  5. Step 5: Solve for x
    x = 4,470,238,930.87/76,392.36
  6. Step 6: Final answer
    x = 58,516.83

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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.