Home / 55,878.48-77,113.08-30,728.52

Finding the Fourth Proportional to 55,878.48, 77,113.08 and 30,728.52

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Solution

The fourth proportional to 55,878.48, 77,113.08 and 30,728.52 is: 42,405.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,878.48 : 77,113.08 = 30,728.52 : x
  2. Step 2: Convert to fraction form
    55,878.48/77,113.08 = 30,728.52/x
  3. Step 3: Cross multiply
    55,878.48x = 77,113.08 × 30,728.52
  4. Step 4: Simplify right side
    55,878.48x = 2,369,570,821.04
  5. Step 5: Solve for x
    x = 2,369,570,821.04/55,878.48
  6. Step 6: Final answer
    x = 42,405.79

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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.