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Finding the Fourth Proportional to 30,880.60, 46,320.90 and 10,106.20

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Solution

The fourth proportional to 30,880.60, 46,320.90 and 10,106.20 is: 15,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,880.60 : 46,320.90 = 10,106.20 : x
  2. Step 2: Convert to fraction form
    30,880.60/46,320.90 = 10,106.20/x
  3. Step 3: Cross multiply
    30,880.60x = 46,320.90 × 10,106.20
  4. Step 4: Simplify right side
    30,880.60x = 468,128,279.58
  5. Step 5: Solve for x
    x = 468,128,279.58/30,880.60
  6. Step 6: Final answer
    x = 15,159.30

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1.5x scale

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.