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Finding the Fourth Proportional to 42,484.80, 63,650.40 and 34,651.20

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Solution

The fourth proportional to 42,484.80, 63,650.40 and 34,651.20 is: 51,914.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,484.80 : 63,650.40 = 34,651.20 : x
  2. Step 2: Convert to fraction form
    42,484.80/63,650.40 = 34,651.20/x
  3. Step 3: Cross multiply
    42,484.80x = 63,650.40 × 34,651.20
  4. Step 4: Simplify right side
    42,484.80x = 2,205,562,740.48
  5. Step 5: Solve for x
    x = 2,205,562,740.48/42,484.80
  6. Step 6: Final answer
    x = 51,914.16

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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.