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Finding the Fourth Proportional to 77,710.80, 107,241.06 and 45,881.75

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Solution

The fourth proportional to 77,710.80, 107,241.06 and 45,881.75 is: 63,316.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,710.80 : 107,241.06 = 45,881.75 : x
  2. Step 2: Convert to fraction form
    77,710.80/107,241.06 = 45,881.75/x
  3. Step 3: Cross multiply
    77,710.80x = 107,241.06 × 45,881.75
  4. Step 4: Simplify right side
    77,710.80x = 4,920,406,968.45
  5. Step 5: Solve for x
    x = 4,920,406,968.45/77,710.80
  6. Step 6: Final answer
    x = 63,316.90

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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.