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Finding the Fourth Proportional to 65,415.78, 90,274.72 and 36,741.64

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Solution

The fourth proportional to 65,415.78, 90,274.72 and 36,741.64 is: 50,703.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,415.78 : 90,274.72 = 36,741.64 : x
  2. Step 2: Convert to fraction form
    65,415.78/90,274.72 = 36,741.64/x
  3. Step 3: Cross multiply
    65,415.78x = 90,274.72 × 36,741.64
  4. Step 4: Simplify right side
    65,415.78x = 3,316,841,263.34
  5. Step 5: Solve for x
    x = 3,316,841,263.34/65,415.78
  6. Step 6: Final answer
    x = 50,703.99

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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.