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Finding the Fourth Proportional to 58,272, 80,415.36 and 33,123.12

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Solution

The fourth proportional to 58,272, 80,415.36 and 33,123.12 is: 45,709.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,272 : 80,415.36 = 33,123.12 : x
  2. Step 2: Convert to fraction form
    58,272/80,415.36 = 33,123.12/x
  3. Step 3: Cross multiply
    58,272x = 80,415.36 × 33,123.12
  4. Step 4: Simplify right side
    58,272x = 2,663,607,619.12
  5. Step 5: Solve for x
    x = 2,663,607,619.12/58,272
  6. Step 6: Final answer
    x = 45,709.91

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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.