Home / 55,356.18-76,391.42-31,155.20

Finding the Fourth Proportional to 55,356.18, 76,391.42 and 31,155.20

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Solution

The fourth proportional to 55,356.18, 76,391.42 and 31,155.20 is: 42,994.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,356.18 : 76,391.42 = 31,155.20 : x
  2. Step 2: Convert to fraction form
    55,356.18/76,391.42 = 31,155.20/x
  3. Step 3: Cross multiply
    55,356.18x = 76,391.42 × 31,155.20
  4. Step 4: Simplify right side
    55,356.18x = 2,379,989,968.38
  5. Step 5: Solve for x
    x = 2,379,989,968.38/55,356.18
  6. Step 6: Final answer
    x = 42,994.11

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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.