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Finding the Fourth Proportional to 85,078.84, 117,407.56 and 47,353.08

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Solution

The fourth proportional to 85,078.84, 117,407.56 and 47,353.08 is: 65,346.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,078.84 : 117,407.56 = 47,353.08 : x
  2. Step 2: Convert to fraction form
    85,078.84/117,407.56 = 47,353.08/x
  3. Step 3: Cross multiply
    85,078.84x = 117,407.56 × 47,353.08
  4. Step 4: Simplify right side
    85,078.84x = 5,559,609,581.28
  5. Step 5: Solve for x
    x = 5,559,609,581.28/85,078.84
  6. Step 6: Final answer
    x = 65,346.56

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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.