Home / 78,946.20-108,953.15-43,141.53

Finding the Fourth Proportional to 78,946.20, 108,953.15 and 43,141.53

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Solution

The fourth proportional to 78,946.20, 108,953.15 and 43,141.53 is: 59,539.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,946.20 : 108,953.15 = 43,141.53 : x
  2. Step 2: Convert to fraction form
    78,946.20/108,953.15 = 43,141.53/x
  3. Step 3: Cross multiply
    78,946.20x = 108,953.15 × 43,141.53
  4. Step 4: Simplify right side
    78,946.20x = 4,700,405,373.61
  5. Step 5: Solve for x
    x = 4,700,405,373.61/78,946.20
  6. Step 6: Final answer
    x = 59,539.35

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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.