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Finding the Fourth Proportional to 86,244.93, 129,323.57 and 39,457.71

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Solution

The fourth proportional to 86,244.93, 129,323.57 and 39,457.71 is: 59,166.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,244.93 : 129,323.57 = 39,457.71 : x
  2. Step 2: Convert to fraction form
    86,244.93/129,323.57 = 39,457.71/x
  3. Step 3: Cross multiply
    86,244.93x = 129,323.57 × 39,457.71
  4. Step 4: Simplify right side
    86,244.93x = 5,102,811,723.94
  5. Step 5: Solve for x
    x = 5,102,811,723.94/86,244.93
  6. Step 6: Final answer
    x = 59,166.51

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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.