Home / 87,291.51-120,458.89-53,356.81

Finding the Fourth Proportional to 87,291.51, 120,458.89 and 53,356.81

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Solution

The fourth proportional to 87,291.51, 120,458.89 and 53,356.81 is: 73,630.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,291.51 : 120,458.89 = 53,356.81 : x
  2. Step 2: Convert to fraction form
    87,291.51/120,458.89 = 53,356.81/x
  3. Step 3: Cross multiply
    87,291.51x = 120,458.89 × 53,356.81
  4. Step 4: Simplify right side
    87,291.51x = 6,427,302,106.54
  5. Step 5: Solve for x
    x = 6,427,302,106.54/87,291.51
  6. Step 6: Final answer
    x = 73,630.32

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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.