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Finding the Fourth Proportional to 70,555.71, 105,671.21 and 40,900.35

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Solution

The fourth proportional to 70,555.71, 105,671.21 and 40,900.35 is: 61,256.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,555.71 : 105,671.21 = 40,900.35 : x
  2. Step 2: Convert to fraction form
    70,555.71/105,671.21 = 40,900.35/x
  3. Step 3: Cross multiply
    70,555.71x = 105,671.21 × 40,900.35
  4. Step 4: Simplify right side
    70,555.71x = 4,321,989,269.42
  5. Step 5: Solve for x
    x = 4,321,989,269.42/70,555.71
  6. Step 6: Final answer
    x = 61,256.41

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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.