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Finding the Fourth Proportional to 87,389.48, 130,802.22 and 45,211.48

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Solution

The fourth proportional to 87,389.48, 130,802.22 and 45,211.48 is: 67,671.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,389.48 : 130,802.22 = 45,211.48 : x
  2. Step 2: Convert to fraction form
    87,389.48/130,802.22 = 45,211.48/x
  3. Step 3: Cross multiply
    87,389.48x = 130,802.22 × 45,211.48
  4. Step 4: Simplify right side
    87,389.48x = 5,913,761,953.49
  5. Step 5: Solve for x
    x = 5,913,761,953.49/87,389.48
  6. Step 6: Final answer
    x = 67,671.33

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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.