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Finding the Fourth Proportional to 101,033.74, 139,423.51 and 55,711.70

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Solution

The fourth proportional to 101,033.74, 139,423.51 and 55,711.70 is: 76,880.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,033.74 : 139,423.51 = 55,711.70 : x
  2. Step 2: Convert to fraction form
    101,033.74/139,423.51 = 55,711.70/x
  3. Step 3: Cross multiply
    101,033.74x = 139,423.51 × 55,711.70
  4. Step 4: Simplify right side
    101,033.74x = 7,767,520,762.07
  5. Step 5: Solve for x
    x = 7,767,520,762.07/101,033.74
  6. Step 6: Final answer
    x = 76,880.46

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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.