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Finding the Fourth Proportional to 112,649.40, 155,449.80 and 61,652.52

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Solution

The fourth proportional to 112,649.40, 155,449.80 and 61,652.52 is: 85,076.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,649.40 : 155,449.80 = 61,652.52 : x
  2. Step 2: Convert to fraction form
    112,649.40/155,449.80 = 61,652.52/x
  3. Step 3: Cross multiply
    112,649.40x = 155,449.80 × 61,652.52
  4. Step 4: Simplify right side
    112,649.40x = 9,583,871,903.50
  5. Step 5: Solve for x
    x = 9,583,871,903.50/112,649.40
  6. Step 6: Final answer
    x = 85,076.99

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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.