Home / 52,123.88-78,185.16-12,681.02

Finding the Fourth Proportional to 52,123.88, 78,185.16 and 12,681.02

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Solution

The fourth proportional to 52,123.88, 78,185.16 and 12,681.02 is: 19,021.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,123.88 : 78,185.16 = 12,681.02 : x
  2. Step 2: Convert to fraction form
    52,123.88/78,185.16 = 12,681.02/x
  3. Step 3: Cross multiply
    52,123.88x = 78,185.16 × 12,681.02
  4. Step 4: Simplify right side
    52,123.88x = 991,467,577.66
  5. Step 5: Solve for x
    x = 991,467,577.66/52,123.88
  6. Step 6: Final answer
    x = 19,021.37

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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.