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Finding the Fourth Proportional to 85,363.82, 117,809.91 and 47,130.20

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Solution

The fourth proportional to 85,363.82, 117,809.91 and 47,130.20 is: 65,044.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,363.82 : 117,809.91 = 47,130.20 : x
  2. Step 2: Convert to fraction form
    85,363.82/117,809.91 = 47,130.20/x
  3. Step 3: Cross multiply
    85,363.82x = 117,809.91 × 47,130.20
  4. Step 4: Simplify right side
    85,363.82x = 5,552,404,620.28
  5. Step 5: Solve for x
    x = 5,552,404,620.28/85,363.82
  6. Step 6: Final answer
    x = 65,044.00

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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.