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Finding the Fourth Proportional to 87,297.36, 120,465 and 51,488.88

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Solution

The fourth proportional to 87,297.36, 120,465 and 51,488.88 is: 71,051.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,297.36 : 120,465 = 51,488.88 : x
  2. Step 2: Convert to fraction form
    87,297.36/120,465 = 51,488.88/x
  3. Step 3: Cross multiply
    87,297.36x = 120,465 × 51,488.88
  4. Step 4: Simplify right side
    87,297.36x = 6,202,607,929.20
  5. Step 5: Solve for x
    x = 6,202,607,929.20/87,297.36
  6. Step 6: Final answer
    x = 71,051.49

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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.