Home / 56,420.10-77,856.14-30,921.96

Finding the Fourth Proportional to 56,420.10, 77,856.14 and 30,921.96

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Solution

The fourth proportional to 56,420.10, 77,856.14 and 30,921.96 is: 42,670.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,420.10 : 77,856.14 = 30,921.96 : x
  2. Step 2: Convert to fraction form
    56,420.10/77,856.14 = 30,921.96/x
  3. Step 3: Cross multiply
    56,420.10x = 77,856.14 × 30,921.96
  4. Step 4: Simplify right side
    56,420.10x = 2,407,464,292.22
  5. Step 5: Solve for x
    x = 2,407,464,292.22/56,420.10
  6. Step 6: Final answer
    x = 42,670.33

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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.