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Finding the Fourth Proportional to 56,468.18, 84,688.50 and 19,018.50

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Solution

The fourth proportional to 56,468.18, 84,688.50 and 19,018.50 is: 28,523.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,468.18 : 84,688.50 = 19,018.50 : x
  2. Step 2: Convert to fraction form
    56,468.18/84,688.50 = 19,018.50/x
  3. Step 3: Cross multiply
    56,468.18x = 84,688.50 × 19,018.50
  4. Step 4: Simplify right side
    56,468.18x = 1,610,648,237.25
  5. Step 5: Solve for x
    x = 1,610,648,237.25/56,468.18
  6. Step 6: Final answer
    x = 28,523.11

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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.