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Finding the Fourth Proportional to 85,709.44, 118,264.88 and 53,855.76

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Solution

The fourth proportional to 85,709.44, 118,264.88 and 53,855.76 is: 74,312.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,709.44 : 118,264.88 = 53,855.76 : x
  2. Step 2: Convert to fraction form
    85,709.44/118,264.88 = 53,855.76/x
  3. Step 3: Cross multiply
    85,709.44x = 118,264.88 × 53,855.76
  4. Step 4: Simplify right side
    85,709.44x = 6,369,244,993.71
  5. Step 5: Solve for x
    x = 6,369,244,993.71/85,709.44
  6. Step 6: Final answer
    x = 74,312.06

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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.