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Finding the Fourth Proportional to 65,802.99, 90,725.74 and 54,916.74

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Solution

The fourth proportional to 65,802.99, 90,725.74 and 54,916.74 is: 75,716.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,802.99 : 90,725.74 = 54,916.74 : x
  2. Step 2: Convert to fraction form
    65,802.99/90,725.74 = 54,916.74/x
  3. Step 3: Cross multiply
    65,802.99x = 90,725.74 × 54,916.74
  4. Step 4: Simplify right side
    65,802.99x = 4,982,361,737.60
  5. Step 5: Solve for x
    x = 4,982,361,737.60/65,802.99
  6. Step 6: Final answer
    x = 75,716.34

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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.