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Finding the Fourth Proportional to 92,871.26, 139,330.44 and 42,987.27

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Solution

The fourth proportional to 92,871.26, 139,330.44 and 42,987.27 is: 64,491.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,871.26 : 139,330.44 = 42,987.27 : x
  2. Step 2: Convert to fraction form
    92,871.26/139,330.44 = 42,987.27/x
  3. Step 3: Cross multiply
    92,871.26x = 139,330.44 × 42,987.27
  4. Step 4: Simplify right side
    92,871.26x = 5,989,435,243.50
  5. Step 5: Solve for x
    x = 5,989,435,243.50/92,871.26
  6. Step 6: Final answer
    x = 64,491.81

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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.