Home / 87,871.19-121,264.49-53,898.45

Finding the Fourth Proportional to 87,871.19, 121,264.49 and 53,898.45

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Solution

The fourth proportional to 87,871.19, 121,264.49 and 53,898.45 is: 74,381.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,871.19 : 121,264.49 = 53,898.45 : x
  2. Step 2: Convert to fraction form
    87,871.19/121,264.49 = 53,898.45/x
  3. Step 3: Cross multiply
    87,871.19x = 121,264.49 × 53,898.45
  4. Step 4: Simplify right side
    87,871.19x = 6,535,967,579.46
  5. Step 5: Solve for x
    x = 6,535,967,579.46/87,871.19
  6. Step 6: Final answer
    x = 74,381.24

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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.