Home / 87,801.98-121,153.69-53,328.77

Finding the Fourth Proportional to 87,801.98, 121,153.69 and 53,328.77

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Solution

The fourth proportional to 87,801.98, 121,153.69 and 53,328.77 is: 73,585.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,801.98 : 121,153.69 = 53,328.77 : x
  2. Step 2: Convert to fraction form
    87,801.98/121,153.69 = 53,328.77/x
  3. Step 3: Cross multiply
    87,801.98x = 121,153.69 × 53,328.77
  4. Step 4: Simplify right side
    87,801.98x = 6,460,977,268.66
  5. Step 5: Solve for x
    x = 6,460,977,268.66/87,801.98
  6. Step 6: Final answer
    x = 73,585.78

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1.5x scale

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.