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Finding the Fourth Proportional to 79,970.91, 119,973.29 and 30,051.45

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Solution

The fourth proportional to 79,970.91, 119,973.29 and 30,051.45 is: 45,083.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,970.91 : 119,973.29 = 30,051.45 : x
  2. Step 2: Convert to fraction form
    79,970.91/119,973.29 = 30,051.45/x
  3. Step 3: Cross multiply
    79,970.91x = 119,973.29 × 30,051.45
  4. Step 4: Simplify right side
    79,970.91x = 3,605,371,175.51
  5. Step 5: Solve for x
    x = 3,605,371,175.51/79,970.91
  6. Step 6: Final answer
    x = 45,083.53

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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.