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Finding the Fourth Proportional to 65,423.78, 90,284.56 and 36,739.46

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Solution

The fourth proportional to 65,423.78, 90,284.56 and 36,739.46 is: 50,700.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,423.78 : 90,284.56 = 36,739.46 : x
  2. Step 2: Convert to fraction form
    65,423.78/90,284.56 = 36,739.46/x
  3. Step 3: Cross multiply
    65,423.78x = 90,284.56 × 36,739.46
  4. Step 4: Simplify right side
    65,423.78x = 3,317,005,980.74
  5. Step 5: Solve for x
    x = 3,317,005,980.74/65,423.78
  6. Step 6: Final answer
    x = 50,700.31

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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.