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Finding the Fourth Proportional to 76,513.68, 105,330.38 and 63,063.63

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Solution

The fourth proportional to 76,513.68, 105,330.38 and 63,063.63 is: 86,814.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,513.68 : 105,330.38 = 63,063.63 : x
  2. Step 2: Convert to fraction form
    76,513.68/105,330.38 = 63,063.63/x
  3. Step 3: Cross multiply
    76,513.68x = 105,330.38 × 63,063.63
  4. Step 4: Simplify right side
    76,513.68x = 6,642,515,796.76
  5. Step 5: Solve for x
    x = 6,642,515,796.76/76,513.68
  6. Step 6: Final answer
    x = 86,814.75

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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.