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Finding the Fourth Proportional to 105,392.68, 145,440.84 and 57,646.96

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Solution

The fourth proportional to 105,392.68, 145,440.84 and 57,646.96 is: 79,552.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,392.68 : 145,440.84 = 57,646.96 : x
  2. Step 2: Convert to fraction form
    105,392.68/145,440.84 = 57,646.96/x
  3. Step 3: Cross multiply
    105,392.68x = 145,440.84 × 57,646.96
  4. Step 4: Simplify right side
    105,392.68x = 8,384,222,285.85
  5. Step 5: Solve for x
    x = 8,384,222,285.85/105,392.68
  6. Step 6: Final answer
    x = 79,552.23

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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.