Home / 86,056.70-129,040.50-38,630.94

Finding the Fourth Proportional to 86,056.70, 129,040.50 and 38,630.94

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Solution

The fourth proportional to 86,056.70, 129,040.50 and 38,630.94 is: 57,926.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,056.70 : 129,040.50 = 38,630.94 : x
  2. Step 2: Convert to fraction form
    86,056.70/129,040.50 = 38,630.94/x
  3. Step 3: Cross multiply
    86,056.70x = 129,040.50 × 38,630.94
  4. Step 4: Simplify right side
    86,056.70x = 4,984,955,813.07
  5. Step 5: Solve for x
    x = 4,984,955,813.07/86,056.70
  6. Step 6: Final answer
    x = 57,926.41

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1.5x scale

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.