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Finding the Fourth Proportional to 75,462.98, 104,139.53 and 47,185.06

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Solution

The fourth proportional to 75,462.98, 104,139.53 and 47,185.06 is: 65,115.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,462.98 : 104,139.53 = 47,185.06 : x
  2. Step 2: Convert to fraction form
    75,462.98/104,139.53 = 47,185.06/x
  3. Step 3: Cross multiply
    75,462.98x = 104,139.53 × 47,185.06
  4. Step 4: Simplify right side
    75,462.98x = 4,913,829,971.42
  5. Step 5: Solve for x
    x = 4,913,829,971.42/75,462.98
  6. Step 6: Final answer
    x = 65,115.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.