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Finding the Fourth Proportional to 65,284.60, 90,091.14 and 38,065.63

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Solution

The fourth proportional to 65,284.60, 90,091.14 and 38,065.63 is: 52,529.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,284.60 : 90,091.14 = 38,065.63 : x
  2. Step 2: Convert to fraction form
    65,284.60/90,091.14 = 38,065.63/x
  3. Step 3: Cross multiply
    65,284.60x = 90,091.14 × 38,065.63
  4. Step 4: Simplify right side
    65,284.60x = 3,429,376,001.52
  5. Step 5: Solve for x
    x = 3,429,376,001.52/65,284.60
  6. Step 6: Final answer
    x = 52,529.63

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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.