Home / 86,789.63-130,070.68-49,366.91

Finding the Fourth Proportional to 86,789.63, 130,070.68 and 49,366.91

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Solution

The fourth proportional to 86,789.63, 130,070.68 and 49,366.91 is: 73,985.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,789.63 : 130,070.68 = 49,366.91 : x
  2. Step 2: Convert to fraction form
    86,789.63/130,070.68 = 49,366.91/x
  3. Step 3: Cross multiply
    86,789.63x = 130,070.68 × 49,366.91
  4. Step 4: Simplify right side
    86,789.63x = 6,421,187,553.20
  5. Step 5: Solve for x
    x = 6,421,187,553.20/86,789.63
  6. Step 6: Final answer
    x = 73,985.65

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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.