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Finding the Fourth Proportional to 56,347.40, 84,510.30 and 16,905.80

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Solution

The fourth proportional to 56,347.40, 84,510.30 and 16,905.80 is: 25,355.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,347.40 : 84,510.30 = 16,905.80 : x
  2. Step 2: Convert to fraction form
    56,347.40/84,510.30 = 16,905.80/x
  3. Step 3: Cross multiply
    56,347.40x = 84,510.30 × 16,905.80
  4. Step 4: Simplify right side
    56,347.40x = 1,428,714,229.74
  5. Step 5: Solve for x
    x = 1,428,714,229.74/56,347.40
  6. Step 6: Final answer
    x = 25,355.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.