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Finding the Fourth Proportional to 61,878.60, 85,392.42 and 35,020.62

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Solution

The fourth proportional to 61,878.60, 85,392.42 and 35,020.62 is: 48,328.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,878.60 : 85,392.42 = 35,020.62 : x
  2. Step 2: Convert to fraction form
    61,878.60/85,392.42 = 35,020.62/x
  3. Step 3: Cross multiply
    61,878.60x = 85,392.42 × 35,020.62
  4. Step 4: Simplify right side
    61,878.60x = 2,990,495,491.70
  5. Step 5: Solve for x
    x = 2,990,495,491.70/61,878.60
  6. Step 6: Final answer
    x = 48,328.43

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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.