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Finding the Fourth Proportional to 72,280.61, 108,374.66 and 34,765.98

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Solution

The fourth proportional to 72,280.61, 108,374.66 and 34,765.98 is: 52,126.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,280.61 : 108,374.66 = 34,765.98 : x
  2. Step 2: Convert to fraction form
    72,280.61/108,374.66 = 34,765.98/x
  3. Step 3: Cross multiply
    72,280.61x = 108,374.66 × 34,765.98
  4. Step 4: Simplify right side
    72,280.61x = 3,767,751,088.24
  5. Step 5: Solve for x
    x = 3,767,751,088.24/72,280.61
  6. Step 6: Final answer
    x = 52,126.72

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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.