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Finding the Fourth Proportional to 42,461.80, 63,615.90 and 34,628.20

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Solution

The fourth proportional to 42,461.80, 63,615.90 and 34,628.20 is: 51,879.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,461.80 : 63,615.90 = 34,628.20 : x
  2. Step 2: Convert to fraction form
    42,461.80/63,615.90 = 34,628.20/x
  3. Step 3: Cross multiply
    42,461.80x = 63,615.90 × 34,628.20
  4. Step 4: Simplify right side
    42,461.80x = 2,202,904,108.38
  5. Step 5: Solve for x
    x = 2,202,904,108.38/42,461.80
  6. Step 6: Final answer
    x = 51,879.67

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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.