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Finding the Fourth Proportional to 56,489, 84,746.52 and 19,553

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Solution

The fourth proportional to 56,489, 84,746.52 and 19,553 is: 29,334.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,489 : 84,746.52 = 19,553 : x
  2. Step 2: Convert to fraction form
    56,489/84,746.52 = 19,553/x
  3. Step 3: Cross multiply
    56,489x = 84,746.52 × 19,553
  4. Step 4: Simplify right side
    56,489x = 1,657,048,705.56
  5. Step 5: Solve for x
    x = 1,657,048,705.56/56,489
  6. Step 6: Final answer
    x = 29,334.01

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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.