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Finding the Fourth Proportional to 60,018.40, 89,930.40 and 51,270.40

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Solution

The fourth proportional to 60,018.40, 89,930.40 and 51,270.40 is: 76,822.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,018.40 : 89,930.40 = 51,270.40 : x
  2. Step 2: Convert to fraction form
    60,018.40/89,930.40 = 51,270.40/x
  3. Step 3: Cross multiply
    60,018.40x = 89,930.40 × 51,270.40
  4. Step 4: Simplify right side
    60,018.40x = 4,610,767,580.16
  5. Step 5: Solve for x
    x = 4,610,767,580.16/60,018.40
  6. Step 6: Final answer
    x = 76,822.57

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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.