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Finding the Fourth Proportional to 65,302.50, 90,091.50 and 42,634.20

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Solution

The fourth proportional to 65,302.50, 90,091.50 and 42,634.20 is: 58,818.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,302.50 : 90,091.50 = 42,634.20 : x
  2. Step 2: Convert to fraction form
    65,302.50/90,091.50 = 42,634.20/x
  3. Step 3: Cross multiply
    65,302.50x = 90,091.50 × 42,634.20
  4. Step 4: Simplify right side
    65,302.50x = 3,840,979,029.30
  5. Step 5: Solve for x
    x = 3,840,979,029.30/65,302.50
  6. Step 6: Final answer
    x = 58,818.25

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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.