Home / 55,637.12-76,780.20-30,485.12

Finding the Fourth Proportional to 55,637.12, 76,780.20 and 30,485.12

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Solution

The fourth proportional to 55,637.12, 76,780.20 and 30,485.12 is: 42,070.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,637.12 : 76,780.20 = 30,485.12 : x
  2. Step 2: Convert to fraction form
    55,637.12/76,780.20 = 30,485.12/x
  3. Step 3: Cross multiply
    55,637.12x = 76,780.20 × 30,485.12
  4. Step 4: Simplify right side
    55,637.12x = 2,340,653,610.62
  5. Step 5: Solve for x
    x = 2,340,653,610.62/55,637.12
  6. Step 6: Final answer
    x = 42,070.00

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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.