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Finding the Fourth Proportional to 79,976.30, 119,970.81 and 46,699.72

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Solution

The fourth proportional to 79,976.30, 119,970.81 and 46,699.72 is: 70,053.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,976.30 : 119,970.81 = 46,699.72 : x
  2. Step 2: Convert to fraction form
    79,976.30/119,970.81 = 46,699.72/x
  3. Step 3: Cross multiply
    79,976.30x = 119,970.81 × 46,699.72
  4. Step 4: Simplify right side
    79,976.30x = 5,602,602,935.25
  5. Step 5: Solve for x
    x = 5,602,602,935.25/79,976.30
  6. Step 6: Final answer
    x = 70,053.29

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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.