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Finding the Fourth Proportional to 93,964, 129,658.44 and 51,511.36

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Solution

The fourth proportional to 93,964, 129,658.44 and 51,511.36 is: 71,079.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,964 : 129,658.44 = 51,511.36 : x
  2. Step 2: Convert to fraction form
    93,964/129,658.44 = 51,511.36/x
  3. Step 3: Cross multiply
    93,964x = 129,658.44 × 51,511.36
  4. Step 4: Simplify right side
    93,964x = 6,678,882,579.88
  5. Step 5: Solve for x
    x = 6,678,882,579.88/93,964
  6. Step 6: Final answer
    x = 71,079.16

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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.