Home / 56,987.46-78,639.12-31,493.16

Finding the Fourth Proportional to 56,987.46, 78,639.12 and 31,493.16

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Solution

The fourth proportional to 56,987.46, 78,639.12 and 31,493.16 is: 43,458.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,987.46 : 78,639.12 = 31,493.16 : x
  2. Step 2: Convert to fraction form
    56,987.46/78,639.12 = 31,493.16/x
  3. Step 3: Cross multiply
    56,987.46x = 78,639.12 × 31,493.16
  4. Step 4: Simplify right side
    56,987.46x = 2,476,594,388.42
  5. Step 5: Solve for x
    x = 2,476,594,388.42/56,987.46
  6. Step 6: Final answer
    x = 43,458.59

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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.