Home / 87,268.05-130,913.81-28,089.45

Finding the Fourth Proportional to 87,268.05, 130,913.81 and 28,089.45

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Solution

The fourth proportional to 87,268.05, 130,913.81 and 28,089.45 is: 42,137.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,268.05 : 130,913.81 = 28,089.45 : x
  2. Step 2: Convert to fraction form
    87,268.05/130,913.81 = 28,089.45/x
  3. Step 3: Cross multiply
    87,268.05x = 130,913.81 × 28,089.45
  4. Step 4: Simplify right side
    87,268.05x = 3,677,296,779.86
  5. Step 5: Solve for x
    x = 3,677,296,779.86/87,268.05
  6. Step 6: Final answer
    x = 42,137.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.