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Finding the Fourth Proportional to 61,122.78, 84,347.03 and 34,626.78

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Solution

The fourth proportional to 61,122.78, 84,347.03 and 34,626.78 is: 47,783.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,122.78 : 84,347.03 = 34,626.78 : x
  2. Step 2: Convert to fraction form
    61,122.78/84,347.03 = 34,626.78/x
  3. Step 3: Cross multiply
    61,122.78x = 84,347.03 × 34,626.78
  4. Step 4: Simplify right side
    61,122.78x = 2,920,666,051.46
  5. Step 5: Solve for x
    x = 2,920,666,051.46/61,122.78
  6. Step 6: Final answer
    x = 47,783.59

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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.