Home / 56,122.08-77,445.20-30,971.52

Finding the Fourth Proportional to 56,122.08, 77,445.20 and 30,971.52

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Solution

The fourth proportional to 56,122.08, 77,445.20 and 30,971.52 is: 42,738.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,122.08 : 77,445.20 = 30,971.52 : x
  2. Step 2: Convert to fraction form
    56,122.08/77,445.20 = 30,971.52/x
  3. Step 3: Cross multiply
    56,122.08x = 77,445.20 × 30,971.52
  4. Step 4: Simplify right side
    56,122.08x = 2,398,595,560.70
  5. Step 5: Solve for x
    x = 2,398,595,560.70/56,122.08
  6. Step 6: Final answer
    x = 42,738.89

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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.