Home / 87,708.84-121,069.32-51,898.77

Finding the Fourth Proportional to 87,708.84, 121,069.32 and 51,898.77

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Solution

The fourth proportional to 87,708.84, 121,069.32 and 51,898.77 is: 71,638.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,708.84 : 121,069.32 = 51,898.77 : x
  2. Step 2: Convert to fraction form
    87,708.84/121,069.32 = 51,898.77/x
  3. Step 3: Cross multiply
    87,708.84x = 121,069.32 × 51,898.77
  4. Step 4: Simplify right side
    87,708.84x = 6,283,348,598.12
  5. Step 5: Solve for x
    x = 6,283,348,598.12/87,708.84
  6. Step 6: Final answer
    x = 71,638.72

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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.