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Finding the Fourth Proportional to 65,270.25, 90,076.59 and 36,985.05

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Solution

The fourth proportional to 65,270.25, 90,076.59 and 36,985.05 is: 51,041.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,270.25 : 90,076.59 = 36,985.05 : x
  2. Step 2: Convert to fraction form
    65,270.25/90,076.59 = 36,985.05/x
  3. Step 3: Cross multiply
    65,270.25x = 90,076.59 × 36,985.05
  4. Step 4: Simplify right side
    65,270.25x = 3,331,487,184.98
  5. Step 5: Solve for x
    x = 3,331,487,184.98/65,270.25
  6. Step 6: Final answer
    x = 51,041.43

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1.5x scale

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.