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Finding the Fourth Proportional to 61,261, 84,539.88 and 34,405.88

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Solution

The fourth proportional to 61,261, 84,539.88 and 34,405.88 is: 47,479.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,261 : 84,539.88 = 34,405.88 : x
  2. Step 2: Convert to fraction form
    61,261/84,539.88 = 34,405.88/x
  3. Step 3: Cross multiply
    61,261x = 84,539.88 × 34,405.88
  4. Step 4: Simplify right side
    61,261x = 2,908,668,966.49
  5. Step 5: Solve for x
    x = 2,908,668,966.49/61,261
  6. Step 6: Final answer
    x = 47,479.95

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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.