Home / 55,186.14-76,154.61-31,312.30

Finding the Fourth Proportional to 55,186.14, 76,154.61 and 31,312.30

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Solution

The fourth proportional to 55,186.14, 76,154.61 and 31,312.30 is: 43,209.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,186.14 : 76,154.61 = 31,312.30 : x
  2. Step 2: Convert to fraction form
    55,186.14/76,154.61 = 31,312.30/x
  3. Step 3: Cross multiply
    55,186.14x = 76,154.61 × 31,312.30
  4. Step 4: Simplify right side
    55,186.14x = 2,384,575,838.14
  5. Step 5: Solve for x
    x = 2,384,575,838.14/55,186.14
  6. Step 6: Final answer
    x = 43,209.69

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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.