Home / 76,578.18-105,678.81-43,043.46

Finding the Fourth Proportional to 76,578.18, 105,678.81 and 43,043.46

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Solution

The fourth proportional to 76,578.18, 105,678.81 and 43,043.46 is: 59,400.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,578.18 : 105,678.81 = 43,043.46 : x
  2. Step 2: Convert to fraction form
    76,578.18/105,678.81 = 43,043.46/x
  3. Step 3: Cross multiply
    76,578.18x = 105,678.81 × 43,043.46
  4. Step 4: Simplify right side
    76,578.18x = 4,548,781,631.08
  5. Step 5: Solve for x
    x = 4,548,781,631.08/76,578.18
  6. Step 6: Final answer
    x = 59,400.49

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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.