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Finding the Fourth Proportional to 71,465.93, 98,623.28 and 39,637.79

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Solution

The fourth proportional to 71,465.93, 98,623.28 and 39,637.79 is: 54,700.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,465.93 : 98,623.28 = 39,637.79 : x
  2. Step 2: Convert to fraction form
    71,465.93/98,623.28 = 39,637.79/x
  3. Step 3: Cross multiply
    71,465.93x = 98,623.28 × 39,637.79
  4. Step 4: Simplify right side
    71,465.93x = 3,909,208,663.56
  5. Step 5: Solve for x
    x = 3,909,208,663.56/71,465.93
  6. Step 6: Final answer
    x = 54,700.31

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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.