Home / 79,681.06-109,935.02-45,220.08

Finding the Fourth Proportional to 79,681.06, 109,935.02 and 45,220.08

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Solution

The fourth proportional to 79,681.06, 109,935.02 and 45,220.08 is: 62,389.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,681.06 : 109,935.02 = 45,220.08 : x
  2. Step 2: Convert to fraction form
    79,681.06/109,935.02 = 45,220.08/x
  3. Step 3: Cross multiply
    79,681.06x = 109,935.02 × 45,220.08
  4. Step 4: Simplify right side
    79,681.06x = 4,971,270,399.20
  5. Step 5: Solve for x
    x = 4,971,270,399.20/79,681.06
  6. Step 6: Final answer
    x = 62,389.61

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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.