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Finding the Fourth Proportional to 66,978.08, 92,430.72 and 37,170.08

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Solution

The fourth proportional to 66,978.08, 92,430.72 and 37,170.08 is: 51,295.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,978.08 : 92,430.72 = 37,170.08 : x
  2. Step 2: Convert to fraction form
    66,978.08/92,430.72 = 37,170.08/x
  3. Step 3: Cross multiply
    66,978.08x = 92,430.72 × 37,170.08
  4. Step 4: Simplify right side
    66,978.08x = 3,435,657,256.86
  5. Step 5: Solve for x
    x = 3,435,657,256.86/66,978.08
  6. Step 6: Final answer
    x = 51,295.25

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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.