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Finding the Fourth Proportional to 86,616, 119,530.08 and 46,872

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Solution

The fourth proportional to 86,616, 119,530.08 and 46,872 is: 64,683.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,616 : 119,530.08 = 46,872 : x
  2. Step 2: Convert to fraction form
    86,616/119,530.08 = 46,872/x
  3. Step 3: Cross multiply
    86,616x = 119,530.08 × 46,872
  4. Step 4: Simplify right side
    86,616x = 5,602,613,909.76
  5. Step 5: Solve for x
    x = 5,602,613,909.76/86,616
  6. Step 6: Final answer
    x = 64,683.36

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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.