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Finding the Fourth Proportional to 64,080.91, 96,124.02 and 21,989.93

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Solution

The fourth proportional to 64,080.91, 96,124.02 and 21,989.93 is: 32,985.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,080.91 : 96,124.02 = 21,989.93 : x
  2. Step 2: Convert to fraction form
    64,080.91/96,124.02 = 21,989.93/x
  3. Step 3: Cross multiply
    64,080.91x = 96,124.02 × 21,989.93
  4. Step 4: Simplify right side
    64,080.91x = 2,113,759,908.04
  5. Step 5: Solve for x
    x = 2,113,759,908.04/64,080.91
  6. Step 6: Final answer
    x = 32,985.80

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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.