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Finding the Fourth Proportional to 85,911.44, 118,547.84 and 51,940.40

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Solution

The fourth proportional to 85,911.44, 118,547.84 and 51,940.40 is: 71,671.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,911.44 : 118,547.84 = 51,940.40 : x
  2. Step 2: Convert to fraction form
    85,911.44/118,547.84 = 51,940.40/x
  3. Step 3: Cross multiply
    85,911.44x = 118,547.84 × 51,940.40
  4. Step 4: Simplify right side
    85,911.44x = 6,157,422,228.74
  5. Step 5: Solve for x
    x = 6,157,422,228.74/85,911.44
  6. Step 6: Final answer
    x = 71,671.74

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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.