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Finding the Fourth Proportional to 43,607.40, 65,411.10 and 42,311.40

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Solution

The fourth proportional to 43,607.40, 65,411.10 and 42,311.40 is: 63,467.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,607.40 : 65,411.10 = 42,311.40 : x
  2. Step 2: Convert to fraction form
    43,607.40/65,411.10 = 42,311.40/x
  3. Step 3: Cross multiply
    43,607.40x = 65,411.10 × 42,311.40
  4. Step 4: Simplify right side
    43,607.40x = 2,767,635,216.54
  5. Step 5: Solve for x
    x = 2,767,635,216.54/43,607.40
  6. Step 6: Final answer
    x = 63,467.10

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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.