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Finding the Fourth Proportional to 75,417.92, 104,065.12 and 43,580.64

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Solution

The fourth proportional to 75,417.92, 104,065.12 and 43,580.64 is: 60,134.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,417.92 : 104,065.12 = 43,580.64 : x
  2. Step 2: Convert to fraction form
    75,417.92/104,065.12 = 43,580.64/x
  3. Step 3: Cross multiply
    75,417.92x = 104,065.12 × 43,580.64
  4. Step 4: Simplify right side
    75,417.92x = 4,535,224,531.28
  5. Step 5: Solve for x
    x = 4,535,224,531.28/75,417.92
  6. Step 6: Final answer
    x = 60,134.57

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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.