Home / 55,970.56-77,239.28-30,820.08

Finding the Fourth Proportional to 55,970.56, 77,239.28 and 30,820.08

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Solution

The fourth proportional to 55,970.56, 77,239.28 and 30,820.08 is: 42,531.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,970.56 : 77,239.28 = 30,820.08 : x
  2. Step 2: Convert to fraction form
    55,970.56/77,239.28 = 30,820.08/x
  3. Step 3: Cross multiply
    55,970.56x = 77,239.28 × 30,820.08
  4. Step 4: Simplify right side
    55,970.56x = 2,380,520,788.74
  5. Step 5: Solve for x
    x = 2,380,520,788.74/55,970.56
  6. Step 6: Final answer
    x = 42,531.66

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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.