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Finding the Fourth Proportional to 85,071.84, 117,403.74 and 47,346.90

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Solution

The fourth proportional to 85,071.84, 117,403.74 and 47,346.90 is: 65,341.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,071.84 : 117,403.74 = 47,346.90 : x
  2. Step 2: Convert to fraction form
    85,071.84/117,403.74 = 47,346.90/x
  3. Step 3: Cross multiply
    85,071.84x = 117,403.74 × 47,346.90
  4. Step 4: Simplify right side
    85,071.84x = 5,558,703,137.41
  5. Step 5: Solve for x
    x = 5,558,703,137.41/85,071.84
  6. Step 6: Final answer
    x = 65,341.28

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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.