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Finding the Fourth Proportional to 58,642.56, 87,982.47 and 19,190.70

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Solution

The fourth proportional to 58,642.56, 87,982.47 and 19,190.70 is: 28,792.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,642.56 : 87,982.47 = 19,190.70 : x
  2. Step 2: Convert to fraction form
    58,642.56/87,982.47 = 19,190.70/x
  3. Step 3: Cross multiply
    58,642.56x = 87,982.47 × 19,190.70
  4. Step 4: Simplify right side
    58,642.56x = 1,688,445,187.03
  5. Step 5: Solve for x
    x = 1,688,445,187.03/58,642.56
  6. Step 6: Final answer
    x = 28,792.15

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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.