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Finding the Fourth Proportional to 105,695.84, 145,860.08 and 57,950.88

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Solution

The fourth proportional to 105,695.84, 145,860.08 and 57,950.88 is: 79,972.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,695.84 : 145,860.08 = 57,950.88 : x
  2. Step 2: Convert to fraction form
    105,695.84/145,860.08 = 57,950.88/x
  3. Step 3: Cross multiply
    105,695.84x = 145,860.08 × 57,950.88
  4. Step 4: Simplify right side
    105,695.84x = 8,452,719,992.87
  5. Step 5: Solve for x
    x = 8,452,719,992.87/105,695.84
  6. Step 6: Final answer
    x = 79,972.12

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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.