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Finding the Fourth Proportional to 78,908.88, 118,360.08 and 43,826.16

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Solution

The fourth proportional to 78,908.88, 118,360.08 and 43,826.16 is: 65,737.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,908.88 : 118,360.08 = 43,826.16 : x
  2. Step 2: Convert to fraction form
    78,908.88/118,360.08 = 43,826.16/x
  3. Step 3: Cross multiply
    78,908.88x = 118,360.08 × 43,826.16
  4. Step 4: Simplify right side
    78,908.88x = 5,187,267,803.69
  5. Step 5: Solve for x
    x = 5,187,267,803.69/78,908.88
  6. Step 6: Final answer
    x = 65,737.44

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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.