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Finding the Fourth Proportional to 78,838.83, 108,797.88 and 43,029.63

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Solution

The fourth proportional to 78,838.83, 108,797.88 and 43,029.63 is: 59,381.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,838.83 : 108,797.88 = 43,029.63 : x
  2. Step 2: Convert to fraction form
    78,838.83/108,797.88 = 43,029.63/x
  3. Step 3: Cross multiply
    78,838.83x = 108,797.88 × 43,029.63
  4. Step 4: Simplify right side
    78,838.83x = 4,681,532,521.18
  5. Step 5: Solve for x
    x = 4,681,532,521.18/78,838.83
  6. Step 6: Final answer
    x = 59,381.05

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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.