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Finding the Fourth Proportional to 65,274.89, 90,079.03 and 36,980.51

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Solution

The fourth proportional to 65,274.89, 90,079.03 and 36,980.51 is: 51,032.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,274.89 : 90,079.03 = 36,980.51 : x
  2. Step 2: Convert to fraction form
    65,274.89/90,079.03 = 36,980.51/x
  3. Step 3: Cross multiply
    65,274.89x = 90,079.03 × 36,980.51
  4. Step 4: Simplify right side
    65,274.89x = 3,331,168,469.71
  5. Step 5: Solve for x
    x = 3,331,168,469.71/65,274.89
  6. Step 6: Final answer
    x = 51,032.92

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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.