Home / 87,298.77-130,689.81-53,911.50

Finding the Fourth Proportional to 87,298.77, 130,689.81 and 53,911.50

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Solution

The fourth proportional to 87,298.77, 130,689.81 and 53,911.50 is: 80,707.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,298.77 : 130,689.81 = 53,911.50 : x
  2. Step 2: Convert to fraction form
    87,298.77/130,689.81 = 53,911.50/x
  3. Step 3: Cross multiply
    87,298.77x = 130,689.81 × 53,911.50
  4. Step 4: Simplify right side
    87,298.77x = 7,045,683,691.82
  5. Step 5: Solve for x
    x = 7,045,683,691.82/87,298.77
  6. Step 6: Final answer
    x = 80,707.71

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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.