Home / 55,812.64-77,021.04-30,661.60

Finding the Fourth Proportional to 55,812.64, 77,021.04 and 30,661.60

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Solution

The fourth proportional to 55,812.64, 77,021.04 and 30,661.60 is: 42,312.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,812.64 : 77,021.04 = 30,661.60 : x
  2. Step 2: Convert to fraction form
    55,812.64/77,021.04 = 30,661.60/x
  3. Step 3: Cross multiply
    55,812.64x = 77,021.04 × 30,661.60
  4. Step 4: Simplify right side
    55,812.64x = 2,361,588,320.06
  5. Step 5: Solve for x
    x = 2,361,588,320.06/55,812.64
  6. Step 6: Final answer
    x = 42,312.79

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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.