Home / 87,746.51-121,090.05-49,506

Finding the Fourth Proportional to 87,746.51, 121,090.05 and 49,506

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Solution

The fourth proportional to 87,746.51, 121,090.05 and 49,506 is: 68,318.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,746.51 : 121,090.05 = 49,506 : x
  2. Step 2: Convert to fraction form
    87,746.51/121,090.05 = 49,506/x
  3. Step 3: Cross multiply
    87,746.51x = 121,090.05 × 49,506
  4. Step 4: Simplify right side
    87,746.51x = 5,994,684,015.30
  5. Step 5: Solve for x
    x = 5,994,684,015.30/87,746.51
  6. Step 6: Final answer
    x = 68,318.21

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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.