Home / 55,186.45-76,155.04-31,312.62

Finding the Fourth Proportional to 55,186.45, 76,155.04 and 31,312.62

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Solution

The fourth proportional to 55,186.45, 76,155.04 and 31,312.62 is: 43,210.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,186.45 : 76,155.04 = 31,312.62 : x
  2. Step 2: Convert to fraction form
    55,186.45/76,155.04 = 31,312.62/x
  3. Step 3: Cross multiply
    55,186.45x = 76,155.04 × 31,312.62
  4. Step 4: Simplify right side
    55,186.45x = 2,384,613,828.60
  5. Step 5: Solve for x
    x = 2,384,613,828.60/55,186.45
  6. Step 6: Final answer
    x = 43,210.13

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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.