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Finding the Fourth Proportional to 71,683.34, 106,987.94 and 70,500.84

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Solution

The fourth proportional to 71,683.34, 106,987.94 and 70,500.84 is: 105,223.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,683.34 : 106,987.94 = 70,500.84 : x
  2. Step 2: Convert to fraction form
    71,683.34/106,987.94 = 70,500.84/x
  3. Step 3: Cross multiply
    71,683.34x = 106,987.94 × 70,500.84
  4. Step 4: Simplify right side
    71,683.34x = 7,542,739,639.87
  5. Step 5: Solve for x
    x = 7,542,739,639.87/71,683.34
  6. Step 6: Final answer
    x = 105,223.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.