Home / 86,790.63-130,072.18-49,367.91

Finding the Fourth Proportional to 86,790.63, 130,072.18 and 49,367.91

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Solution

The fourth proportional to 86,790.63, 130,072.18 and 49,367.91 is: 73,987.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,790.63 : 130,072.18 = 49,367.91 : x
  2. Step 2: Convert to fraction form
    86,790.63/130,072.18 = 49,367.91/x
  3. Step 3: Cross multiply
    86,790.63x = 130,072.18 × 49,367.91
  4. Step 4: Simplify right side
    86,790.63x = 6,421,391,675.74
  5. Step 5: Solve for x
    x = 6,421,391,675.74/86,790.63
  6. Step 6: Final answer
    x = 73,987.15

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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.