Home / 55,641.13-76,784.75-30,490.09

Finding the Fourth Proportional to 55,641.13, 76,784.75 and 30,490.09

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Solution

The fourth proportional to 55,641.13, 76,784.75 and 30,490.09 is: 42,076.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,641.13 : 76,784.75 = 30,490.09 : x
  2. Step 2: Convert to fraction form
    55,641.13/76,784.75 = 30,490.09/x
  3. Step 3: Cross multiply
    55,641.13x = 76,784.75 × 30,490.09
  4. Step 4: Simplify right side
    55,641.13x = 2,341,173,938.13
  5. Step 5: Solve for x
    x = 2,341,173,938.13/55,641.13
  6. Step 6: Final answer
    x = 42,076.32

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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.