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Finding the Fourth Proportional to 72,483.84, 100,045.44 and 51,269.76

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Solution

The fourth proportional to 72,483.84, 100,045.44 and 51,269.76 is: 70,764.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,483.84 : 100,045.44 = 51,269.76 : x
  2. Step 2: Convert to fraction form
    72,483.84/100,045.44 = 51,269.76/x
  3. Step 3: Cross multiply
    72,483.84x = 100,045.44 × 51,269.76
  4. Step 4: Simplify right side
    72,483.84x = 5,129,305,697.89
  5. Step 5: Solve for x
    x = 5,129,305,697.89/72,483.84
  6. Step 6: Final answer
    x = 70,764.82

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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.