Home / 55,783.13-76,981.32-30,632.63

Finding the Fourth Proportional to 55,783.13, 76,981.32 and 30,632.63

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Solution

The fourth proportional to 55,783.13, 76,981.32 and 30,632.63 is: 42,273.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,783.13 : 76,981.32 = 30,632.63 : x
  2. Step 2: Convert to fraction form
    55,783.13/76,981.32 = 30,632.63/x
  3. Step 3: Cross multiply
    55,783.13x = 76,981.32 × 30,632.63
  4. Step 4: Simplify right side
    55,783.13x = 2,358,139,907.57
  5. Step 5: Solve for x
    x = 2,358,139,907.57/55,783.13
  6. Step 6: Final answer
    x = 42,273.36

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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.