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Finding the Fourth Proportional to 84,885.42, 127,239.36 and 47,390.52

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Solution

The fourth proportional to 84,885.42, 127,239.36 and 47,390.52 is: 71,036.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,885.42 : 127,239.36 = 47,390.52 : x
  2. Step 2: Convert to fraction form
    84,885.42/127,239.36 = 47,390.52/x
  3. Step 3: Cross multiply
    84,885.42x = 127,239.36 × 47,390.52
  4. Step 4: Simplify right side
    84,885.42x = 6,029,939,434.87
  5. Step 5: Solve for x
    x = 6,029,939,434.87/84,885.42
  6. Step 6: Final answer
    x = 71,036.22

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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.