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Finding the Fourth Proportional to 56,625.96, 84,937.98 and 19,689

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Solution

The fourth proportional to 56,625.96, 84,937.98 and 19,689 is: 29,533.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,625.96 : 84,937.98 = 19,689 : x
  2. Step 2: Convert to fraction form
    56,625.96/84,937.98 = 19,689/x
  3. Step 3: Cross multiply
    56,625.96x = 84,937.98 × 19,689
  4. Step 4: Simplify right side
    56,625.96x = 1,672,343,888.22
  5. Step 5: Solve for x
    x = 1,672,343,888.22/56,625.96
  6. Step 6: Final answer
    x = 29,533.17

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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.