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Finding the Fourth Proportional to 34,800.79, 48,011.64 and 19,689.99

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Solution

The fourth proportional to 34,800.79, 48,011.64 and 19,689.99 is: 27,164.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,800.79 : 48,011.64 = 19,689.99 : x
  2. Step 2: Convert to fraction form
    34,800.79/48,011.64 = 19,689.99/x
  3. Step 3: Cross multiply
    34,800.79x = 48,011.64 × 19,689.99
  4. Step 4: Simplify right side
    34,800.79x = 945,348,457.60
  5. Step 5: Solve for x
    x = 945,348,457.60/34,800.79
  6. Step 6: Final answer
    x = 27,164.57

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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.