Home / 87,018.81-120,083.63-51,210.93

Finding the Fourth Proportional to 87,018.81, 120,083.63 and 51,210.93

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Solution

The fourth proportional to 87,018.81, 120,083.63 and 51,210.93 is: 70,669.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,018.81 : 120,083.63 = 51,210.93 : x
  2. Step 2: Convert to fraction form
    87,018.81/120,083.63 = 51,210.93/x
  3. Step 3: Cross multiply
    87,018.81x = 120,083.63 × 51,210.93
  4. Step 4: Simplify right side
    87,018.81x = 6,149,594,114.02
  5. Step 5: Solve for x
    x = 6,149,594,114.02/87,018.81
  6. Step 6: Final answer
    x = 70,669.71

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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.