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Finding the Fourth Proportional to 65,384.76, 98,080.68 and 21,008.04

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Solution

The fourth proportional to 65,384.76, 98,080.68 and 21,008.04 is: 31,513.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,384.76 : 98,080.68 = 21,008.04 : x
  2. Step 2: Convert to fraction form
    65,384.76/98,080.68 = 21,008.04/x
  3. Step 3: Cross multiply
    65,384.76x = 98,080.68 × 21,008.04
  4. Step 4: Simplify right side
    65,384.76x = 2,060,482,848.67
  5. Step 5: Solve for x
    x = 2,060,482,848.67/65,384.76
  6. Step 6: Final answer
    x = 31,513.20

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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.