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Finding the Fourth Proportional to 61,405.50, 84,739.59 and 34,909.50

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Solution

The fourth proportional to 61,405.50, 84,739.59 and 34,909.50 is: 48,175.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,405.50 : 84,739.59 = 34,909.50 : x
  2. Step 2: Convert to fraction form
    61,405.50/84,739.59 = 34,909.50/x
  3. Step 3: Cross multiply
    61,405.50x = 84,739.59 × 34,909.50
  4. Step 4: Simplify right side
    61,405.50x = 2,958,216,717.11
  5. Step 5: Solve for x
    x = 2,958,216,717.11/61,405.50
  6. Step 6: Final answer
    x = 48,175.11

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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.