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Finding the Fourth Proportional to 56,490.40, 84,800.40 and 30,181.60

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Solution

The fourth proportional to 56,490.40, 84,800.40 and 30,181.60 is: 45,307.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,490.40 : 84,800.40 = 30,181.60 : x
  2. Step 2: Convert to fraction form
    56,490.40/84,800.40 = 30,181.60/x
  3. Step 3: Cross multiply
    56,490.40x = 84,800.40 × 30,181.60
  4. Step 4: Simplify right side
    56,490.40x = 2,559,411,752.64
  5. Step 5: Solve for x
    x = 2,559,411,752.64/56,490.40
  6. Step 6: Final answer
    x = 45,307.02

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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.