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Finding the Fourth Proportional to 45,644.60, 68,466.90 and 42,145.40

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Solution

The fourth proportional to 45,644.60, 68,466.90 and 42,145.40 is: 63,218.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,644.60 : 68,466.90 = 42,145.40 : x
  2. Step 2: Convert to fraction form
    45,644.60/68,466.90 = 42,145.40/x
  3. Step 3: Cross multiply
    45,644.60x = 68,466.90 × 42,145.40
  4. Step 4: Simplify right side
    45,644.60x = 2,885,564,887.26
  5. Step 5: Solve for x
    x = 2,885,564,887.26/45,644.60
  6. Step 6: Final answer
    x = 63,218.10

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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.