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Finding the Fourth Proportional to 77,681.60, 107,197.52 and 45,860.75

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Solution

The fourth proportional to 77,681.60, 107,197.52 and 45,860.75 is: 63,286.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,681.60 : 107,197.52 = 45,860.75 : x
  2. Step 2: Convert to fraction form
    77,681.60/107,197.52 = 45,860.75/x
  3. Step 3: Cross multiply
    77,681.60x = 107,197.52 × 45,860.75
  4. Step 4: Simplify right side
    77,681.60x = 4,916,157,900.05
  5. Step 5: Solve for x
    x = 4,916,157,900.05/77,681.60
  6. Step 6: Final answer
    x = 63,286.01

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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.