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Finding the Fourth Proportional to 85,483.68, 128,237.64 and 26,324.16

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Solution

The fourth proportional to 85,483.68, 128,237.64 and 26,324.16 is: 39,489.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,483.68 : 128,237.64 = 26,324.16 : x
  2. Step 2: Convert to fraction form
    85,483.68/128,237.64 = 26,324.16/x
  3. Step 3: Cross multiply
    85,483.68x = 128,237.64 × 26,324.16
  4. Step 4: Simplify right side
    85,483.68x = 3,375,748,153.38
  5. Step 5: Solve for x
    x = 3,375,748,153.38/85,483.68
  6. Step 6: Final answer
    x = 39,489.97

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1.5x scale

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.