Home / 105,731.71-145,909.09-60,423.55

Finding the Fourth Proportional to 105,731.71, 145,909.09 and 60,423.55

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Solution

The fourth proportional to 105,731.71, 145,909.09 and 60,423.55 is: 83,384.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,731.71 : 145,909.09 = 60,423.55 : x
  2. Step 2: Convert to fraction form
    105,731.71/145,909.09 = 60,423.55/x
  3. Step 3: Cross multiply
    105,731.71x = 145,909.09 × 60,423.55
  4. Step 4: Simplify right side
    105,731.71x = 8,816,345,195.07
  5. Step 5: Solve for x
    x = 8,816,345,195.07/105,731.71
  6. Step 6: Final answer
    x = 83,384.12

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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.