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Finding the Fourth Proportional to 86,466.99, 129,725.55 and 35,856.61

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Solution

The fourth proportional to 86,466.99, 129,725.55 and 35,856.61 is: 53,795.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,466.99 : 129,725.55 = 35,856.61 : x
  2. Step 2: Convert to fraction form
    86,466.99/129,725.55 = 35,856.61/x
  3. Step 3: Cross multiply
    86,466.99x = 129,725.55 × 35,856.61
  4. Step 4: Simplify right side
    86,466.99x = 4,651,518,129.07
  5. Step 5: Solve for x
    x = 4,651,518,129.07/86,466.99
  6. Step 6: Final answer
    x = 53,795.30

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1.5x scale

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.