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Finding the Fourth Proportional to 65,275.16, 90,079.50 and 36,986.24

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Solution

The fourth proportional to 65,275.16, 90,079.50 and 36,986.24 is: 51,040.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,275.16 : 90,079.50 = 36,986.24 : x
  2. Step 2: Convert to fraction form
    65,275.16/90,079.50 = 36,986.24/x
  3. Step 3: Cross multiply
    65,275.16x = 90,079.50 × 36,986.24
  4. Step 4: Simplify right side
    65,275.16x = 3,331,702,006.08
  5. Step 5: Solve for x
    x = 3,331,702,006.08/65,275.16
  6. Step 6: Final answer
    x = 51,040.89

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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.