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Finding the Fourth Proportional to 65,817.04, 90,829.60 and 36,009.04

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Solution

The fourth proportional to 65,817.04, 90,829.60 and 36,009.04 is: 49,693.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,817.04 : 90,829.60 = 36,009.04 : x
  2. Step 2: Convert to fraction form
    65,817.04/90,829.60 = 36,009.04/x
  3. Step 3: Cross multiply
    65,817.04x = 90,829.60 × 36,009.04
  4. Step 4: Simplify right side
    65,817.04x = 3,270,686,699.58
  5. Step 5: Solve for x
    x = 3,270,686,699.58/65,817.04
  6. Step 6: Final answer
    x = 49,693.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.