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Finding the Fourth Proportional to 101,489.40, 140,021.46 and 59,038.92

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Solution

The fourth proportional to 101,489.40, 140,021.46 and 59,038.92 is: 81,453.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,489.40 : 140,021.46 = 59,038.92 : x
  2. Step 2: Convert to fraction form
    101,489.40/140,021.46 = 59,038.92/x
  3. Step 3: Cross multiply
    101,489.40x = 140,021.46 × 59,038.92
  4. Step 4: Simplify right side
    101,489.40x = 8,266,715,775.22
  5. Step 5: Solve for x
    x = 8,266,715,775.22/101,489.40
  6. Step 6: Final answer
    x = 81,453.98

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1.5x scale

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.