Home / 56,276.40-77,650.20-31,121.04

Finding the Fourth Proportional to 56,276.40, 77,650.20 and 31,121.04

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Solution

The fourth proportional to 56,276.40, 77,650.20 and 31,121.04 is: 42,940.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,276.40 : 77,650.20 = 31,121.04 : x
  2. Step 2: Convert to fraction form
    56,276.40/77,650.20 = 31,121.04/x
  3. Step 3: Cross multiply
    56,276.40x = 77,650.20 × 31,121.04
  4. Step 4: Simplify right side
    56,276.40x = 2,416,554,980.21
  5. Step 5: Solve for x
    x = 2,416,554,980.21/56,276.40
  6. Step 6: Final answer
    x = 42,940.82

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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.