Home / 90,035.79-135,053.70-30,871.98

Finding the Fourth Proportional to 90,035.79, 135,053.70 and 30,871.98

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Solution

The fourth proportional to 90,035.79, 135,053.70 and 30,871.98 is: 46,307.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,035.79 : 135,053.70 = 30,871.98 : x
  2. Step 2: Convert to fraction form
    90,035.79/135,053.70 = 30,871.98/x
  3. Step 3: Cross multiply
    90,035.79x = 135,053.70 × 30,871.98
  4. Step 4: Simplify right side
    90,035.79x = 4,169,375,125.33
  5. Step 5: Solve for x
    x = 4,169,375,125.33/90,035.79
  6. Step 6: Final answer
    x = 46,307.98

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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.