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Finding the Fourth Proportional to 65,484.10, 90,368.68 and 37,189.99

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Solution

The fourth proportional to 65,484.10, 90,368.68 and 37,189.99 is: 51,322.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,484.10 : 90,368.68 = 37,189.99 : x
  2. Step 2: Convert to fraction form
    65,484.10/90,368.68 = 37,189.99/x
  3. Step 3: Cross multiply
    65,484.10x = 90,368.68 × 37,189.99
  4. Step 4: Simplify right side
    65,484.10x = 3,360,810,305.51
  5. Step 5: Solve for x
    x = 3,360,810,305.51/65,484.10
  6. Step 6: Final answer
    x = 51,322.54

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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.