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Finding the Fourth Proportional to 71,916.77, 107,875.06 and 19,326.26

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Solution

The fourth proportional to 71,916.77, 107,875.06 and 19,326.26 is: 28,989.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,916.77 : 107,875.06 = 19,326.26 : x
  2. Step 2: Convert to fraction form
    71,916.77/107,875.06 = 19,326.26/x
  3. Step 3: Cross multiply
    71,916.77x = 107,875.06 × 19,326.26
  4. Step 4: Simplify right side
    71,916.77x = 2,084,821,457.08
  5. Step 5: Solve for x
    x = 2,084,821,457.08/71,916.77
  6. Step 6: Final answer
    x = 28,989.36

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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.