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Finding the Fourth Proportional to 65,702.36, 90,562.74 and 51,337.08

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Solution

The fourth proportional to 65,702.36, 90,562.74 and 51,337.08 is: 70,761.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,702.36 : 90,562.74 = 51,337.08 : x
  2. Step 2: Convert to fraction form
    65,702.36/90,562.74 = 51,337.08/x
  3. Step 3: Cross multiply
    65,702.36x = 90,562.74 × 51,337.08
  4. Step 4: Simplify right side
    65,702.36x = 4,649,226,628.40
  5. Step 5: Solve for x
    x = 4,649,226,628.40/65,702.36
  6. Step 6: Final answer
    x = 70,761.94

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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.