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Finding the Fourth Proportional to 72,459.81, 100,002.87 and 48,259.44

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Solution

The fourth proportional to 72,459.81, 100,002.87 and 48,259.44 is: 66,603.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,459.81 : 100,002.87 = 48,259.44 : x
  2. Step 2: Convert to fraction form
    72,459.81/100,002.87 = 48,259.44/x
  3. Step 3: Cross multiply
    72,459.81x = 100,002.87 × 48,259.44
  4. Step 4: Simplify right side
    72,459.81x = 4,826,082,504.59
  5. Step 5: Solve for x
    x = 4,826,082,504.59/72,459.81
  6. Step 6: Final answer
    x = 66,603.58

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1.5x scale

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.