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Finding the Fourth Proportional to 78,961.65, 118,461.96 and 55,633.65

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Solution

The fourth proportional to 78,961.65, 118,461.96 and 55,633.65 is: 83,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,961.65 : 118,461.96 = 55,633.65 : x
  2. Step 2: Convert to fraction form
    78,961.65/118,461.96 = 55,633.65/x
  3. Step 3: Cross multiply
    78,961.65x = 118,461.96 × 55,633.65
  4. Step 4: Simplify right side
    78,961.65x = 6,590,471,220.95
  5. Step 5: Solve for x
    x = 6,590,471,220.95/78,961.65
  6. Step 6: Final answer
    x = 83,464.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.