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Finding the Fourth Proportional to 45,830.80, 68,746.20 and 43,411.60

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Solution

The fourth proportional to 45,830.80, 68,746.20 and 43,411.60 is: 65,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,830.80 : 68,746.20 = 43,411.60 : x
  2. Step 2: Convert to fraction form
    45,830.80/68,746.20 = 43,411.60/x
  3. Step 3: Cross multiply
    45,830.80x = 68,746.20 × 43,411.60
  4. Step 4: Simplify right side
    45,830.80x = 2,984,382,535.92
  5. Step 5: Solve for x
    x = 2,984,382,535.92/45,830.80
  6. Step 6: Final answer
    x = 65,117.40

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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.