Home / 55,878.83-77,112.95-30,385.21

Finding the Fourth Proportional to 55,878.83, 77,112.95 and 30,385.21

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Solution

The fourth proportional to 55,878.83, 77,112.95 and 30,385.21 is: 41,931.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,878.83 : 77,112.95 = 30,385.21 : x
  2. Step 2: Convert to fraction form
    55,878.83/77,112.95 = 30,385.21/x
  3. Step 3: Cross multiply
    55,878.83x = 77,112.95 × 30,385.21
  4. Step 4: Simplify right side
    55,878.83x = 2,343,093,179.47
  5. Step 5: Solve for x
    x = 2,343,093,179.47/55,878.83
  6. Step 6: Final answer
    x = 41,931.68

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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.