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Finding the Fourth Proportional to 65,871.95, 98,810.64 and 19,124.82

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Solution

The fourth proportional to 65,871.95, 98,810.64 and 19,124.82 is: 28,688.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,871.95 : 98,810.64 = 19,124.82 : x
  2. Step 2: Convert to fraction form
    65,871.95/98,810.64 = 19,124.82/x
  3. Step 3: Cross multiply
    65,871.95x = 98,810.64 × 19,124.82
  4. Step 4: Simplify right side
    65,871.95x = 1,889,735,704.08
  5. Step 5: Solve for x
    x = 1,889,735,704.08/65,871.95
  6. Step 6: Final answer
    x = 28,688.02

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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.