Home / 78,946.28-108,946.64-43,136.29

Finding the Fourth Proportional to 78,946.28, 108,946.64 and 43,136.29

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Solution

The fourth proportional to 78,946.28, 108,946.64 and 43,136.29 is: 59,528.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,946.28 : 108,946.64 = 43,136.29 : x
  2. Step 2: Convert to fraction form
    78,946.28/108,946.64 = 43,136.29/x
  3. Step 3: Cross multiply
    78,946.28x = 108,946.64 × 43,136.29
  4. Step 4: Simplify right side
    78,946.28x = 4,699,553,641.88
  5. Step 5: Solve for x
    x = 4,699,553,641.88/78,946.28
  6. Step 6: Final answer
    x = 59,528.50

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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.