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Finding the Fourth Proportional to 85,345.68, 117,798.12 and 51,839.76

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Solution

The fourth proportional to 85,345.68, 117,798.12 and 51,839.76 is: 71,551.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,345.68 : 117,798.12 = 51,839.76 : x
  2. Step 2: Convert to fraction form
    85,345.68/117,798.12 = 51,839.76/x
  3. Step 3: Cross multiply
    85,345.68x = 117,798.12 × 51,839.76
  4. Step 4: Simplify right side
    85,345.68x = 6,106,626,269.25
  5. Step 5: Solve for x
    x = 6,106,626,269.25/85,345.68
  6. Step 6: Final answer
    x = 71,551.67

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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.