Home / 105,685.09-145,841.55-57,937.39

Finding the Fourth Proportional to 105,685.09, 145,841.55 and 57,937.39

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Solution

The fourth proportional to 105,685.09, 145,841.55 and 57,937.39 is: 79,951.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,685.09 : 145,841.55 = 57,937.39 : x
  2. Step 2: Convert to fraction form
    105,685.09/145,841.55 = 57,937.39/x
  3. Step 3: Cross multiply
    105,685.09x = 145,841.55 × 57,937.39
  4. Step 4: Simplify right side
    105,685.09x = 8,449,678,760.55
  5. Step 5: Solve for x
    x = 8,449,678,760.55/105,685.09
  6. Step 6: Final answer
    x = 79,951.47

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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.