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Finding the Fourth Proportional to 64,271.34, 96,411.60 and 19,892.40

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Solution

The fourth proportional to 64,271.34, 96,411.60 and 19,892.40 is: 29,840.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,271.34 : 96,411.60 = 19,892.40 : x
  2. Step 2: Convert to fraction form
    64,271.34/96,411.60 = 19,892.40/x
  3. Step 3: Cross multiply
    64,271.34x = 96,411.60 × 19,892.40
  4. Step 4: Simplify right side
    64,271.34x = 1,917,858,111.84
  5. Step 5: Solve for x
    x = 1,917,858,111.84/64,271.34
  6. Step 6: Final answer
    x = 29,840.02

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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.