Home / 87,465.30-120,698.64-51,666.81

Finding the Fourth Proportional to 87,465.30, 120,698.64 and 51,666.81

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Solution

The fourth proportional to 87,465.30, 120,698.64 and 51,666.81 is: 71,298.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,465.30 : 120,698.64 = 51,666.81 : x
  2. Step 2: Convert to fraction form
    87,465.30/120,698.64 = 51,666.81/x
  3. Step 3: Cross multiply
    87,465.30x = 120,698.64 × 51,666.81
  4. Step 4: Simplify right side
    87,465.30x = 6,236,113,700.14
  5. Step 5: Solve for x
    x = 6,236,113,700.14/87,465.30
  6. Step 6: Final answer
    x = 71,298.15

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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.