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Finding the Fourth Proportional to 61,060.50, 84,221.40 and 42,949.63

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Solution

The fourth proportional to 61,060.50, 84,221.40 and 42,949.63 is: 59,240.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,060.50 : 84,221.40 = 42,949.63 : x
  2. Step 2: Convert to fraction form
    61,060.50/84,221.40 = 42,949.63/x
  3. Step 3: Cross multiply
    61,060.50x = 84,221.40 × 42,949.63
  4. Step 4: Simplify right side
    61,060.50x = 3,617,277,968.08
  5. Step 5: Solve for x
    x = 3,617,277,968.08/61,060.50
  6. Step 6: Final answer
    x = 59,240.88

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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.