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Finding the Fourth Proportional to 61,420.32, 84,669.84 and 43,459.92

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Solution

The fourth proportional to 61,420.32, 84,669.84 and 43,459.92 is: 59,910.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,420.32 : 84,669.84 = 43,459.92 : x
  2. Step 2: Convert to fraction form
    61,420.32/84,669.84 = 43,459.92/x
  3. Step 3: Cross multiply
    61,420.32x = 84,669.84 × 43,459.92
  4. Step 4: Simplify right side
    61,420.32x = 3,679,744,472.81
  5. Step 5: Solve for x
    x = 3,679,744,472.81/61,420.32
  6. Step 6: Final answer
    x = 59,910.86

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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.