Home / 56,718.14-78,272.81-30,878.43

Finding the Fourth Proportional to 56,718.14, 78,272.81 and 30,878.43

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Solution

The fourth proportional to 56,718.14, 78,272.81 and 30,878.43 is: 42,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,718.14 : 78,272.81 = 30,878.43 : x
  2. Step 2: Convert to fraction form
    56,718.14/78,272.81 = 30,878.43/x
  3. Step 3: Cross multiply
    56,718.14x = 78,272.81 × 30,878.43
  4. Step 4: Simplify right side
    56,718.14x = 2,416,941,175.59
  5. Step 5: Solve for x
    x = 2,416,941,175.59/56,718.14
  6. Step 6: Final answer
    x = 42,613.20

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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.