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Finding the Fourth Proportional to 57,804.76, 86,724.64 and 40,970.36

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Solution

The fourth proportional to 57,804.76, 86,724.64 and 40,970.36 is: 61,467.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,804.76 : 86,724.64 = 40,970.36 : x
  2. Step 2: Convert to fraction form
    57,804.76/86,724.64 = 40,970.36/x
  3. Step 3: Cross multiply
    57,804.76x = 86,724.64 × 40,970.36
  4. Step 4: Simplify right side
    57,804.76x = 3,553,139,721.67
  5. Step 5: Solve for x
    x = 3,553,139,721.67/57,804.76
  6. Step 6: Final answer
    x = 61,467.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.