Home / 64,279.55-88,705.78-39,129.05

Finding the Fourth Proportional to 64,279.55, 88,705.78 and 39,129.05

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Solution

The fourth proportional to 64,279.55, 88,705.78 and 39,129.05 is: 53,998.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,279.55 : 88,705.78 = 39,129.05 : x
  2. Step 2: Convert to fraction form
    64,279.55/88,705.78 = 39,129.05/x
  3. Step 3: Cross multiply
    64,279.55x = 88,705.78 × 39,129.05
  4. Step 4: Simplify right side
    64,279.55x = 3,470,973,024.85
  5. Step 5: Solve for x
    x = 3,470,973,024.85/64,279.55
  6. Step 6: Final answer
    x = 53,998.09

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1.5x scale

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.