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Finding the Fourth Proportional to 56,881, 78,486.06 and 33,002.20

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Solution

The fourth proportional to 56,881, 78,486.06 and 33,002.20 is: 45,537.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,881 : 78,486.06 = 33,002.20 : x
  2. Step 2: Convert to fraction form
    56,881/78,486.06 = 33,002.20/x
  3. Step 3: Cross multiply
    56,881x = 78,486.06 × 33,002.20
  4. Step 4: Simplify right side
    56,881x = 2,590,212,649.33
  5. Step 5: Solve for x
    x = 2,590,212,649.33/56,881
  6. Step 6: Final answer
    x = 45,537.40

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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.