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Finding the Fourth Proportional to 79,027.68, 109,057.16 and 45,038.20

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Solution

The fourth proportional to 79,027.68, 109,057.16 and 45,038.20 is: 62,152.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,027.68 : 109,057.16 = 45,038.20 : x
  2. Step 2: Convert to fraction form
    79,027.68/109,057.16 = 45,038.20/x
  3. Step 3: Cross multiply
    79,027.68x = 109,057.16 × 45,038.20
  4. Step 4: Simplify right side
    79,027.68x = 4,911,738,183.51
  5. Step 5: Solve for x
    x = 4,911,738,183.51/79,027.68
  6. Step 6: Final answer
    x = 62,152.12

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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.