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Finding the Fourth Proportional to 30,038.70, 45,060.45 and 8,977.20

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Solution

The fourth proportional to 30,038.70, 45,060.45 and 8,977.20 is: 13,466.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,038.70 : 45,060.45 = 8,977.20 : x
  2. Step 2: Convert to fraction form
    30,038.70/45,060.45 = 8,977.20/x
  3. Step 3: Cross multiply
    30,038.70x = 45,060.45 × 8,977.20
  4. Step 4: Simplify right side
    30,038.70x = 404,516,899.79
  5. Step 5: Solve for x
    x = 404,516,899.79/30,038.70
  6. Step 6: Final answer
    x = 13,466.53

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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.