Home / 56,070.82-77,378.31-30,921.22

Finding the Fourth Proportional to 56,070.82, 77,378.31 and 30,921.22

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Solution

The fourth proportional to 56,070.82, 77,378.31 and 30,921.22 is: 42,671.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,070.82 : 77,378.31 = 30,921.22 : x
  2. Step 2: Convert to fraction form
    56,070.82/77,378.31 = 30,921.22/x
  3. Step 3: Cross multiply
    56,070.82x = 77,378.31 × 30,921.22
  4. Step 4: Simplify right side
    56,070.82x = 2,392,631,746.74
  5. Step 5: Solve for x
    x = 2,392,631,746.74/56,070.82
  6. Step 6: Final answer
    x = 42,671.60

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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.