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Finding the Fourth Proportional to 62,983.70, 86,913.58 and 34,689.40

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Solution

The fourth proportional to 62,983.70, 86,913.58 and 34,689.40 is: 47,869.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,983.70 : 86,913.58 = 34,689.40 : x
  2. Step 2: Convert to fraction form
    62,983.70/86,913.58 = 34,689.40/x
  3. Step 3: Cross multiply
    62,983.70x = 86,913.58 × 34,689.40
  4. Step 4: Simplify right side
    62,983.70x = 3,014,979,942.05
  5. Step 5: Solve for x
    x = 3,014,979,942.05/62,983.70
  6. Step 6: Final answer
    x = 47,869.21

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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.