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Finding the Fourth Proportional to 86,137.85, 118,861.70 and 53,866.24

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Solution

The fourth proportional to 86,137.85, 118,861.70 and 53,866.24 is: 74,330.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,137.85 : 118,861.70 = 53,866.24 : x
  2. Step 2: Convert to fraction form
    86,137.85/118,861.70 = 53,866.24/x
  3. Step 3: Cross multiply
    86,137.85x = 118,861.70 × 53,866.24
  4. Step 4: Simplify right side
    86,137.85x = 6,402,632,292.52
  5. Step 5: Solve for x
    x = 6,402,632,292.52/86,137.85
  6. Step 6: Final answer
    x = 74,330.07

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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.