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Finding the Fourth Proportional to 65,060.62, 89,784.35 and 38,203.45

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Solution

The fourth proportional to 65,060.62, 89,784.35 and 38,203.45 is: 52,721.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,060.62 : 89,784.35 = 38,203.45 : x
  2. Step 2: Convert to fraction form
    65,060.62/89,784.35 = 38,203.45/x
  3. Step 3: Cross multiply
    65,060.62x = 89,784.35 × 38,203.45
  4. Step 4: Simplify right side
    65,060.62x = 3,430,071,653.79
  5. Step 5: Solve for x
    x = 3,430,071,653.79/65,060.62
  6. Step 6: Final answer
    x = 52,721.17

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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.