Home / 34,820.76-48,017.20-30,980.28

Finding the Fourth Proportional to 34,820.76, 48,017.20 and 30,980.28

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Solution

The fourth proportional to 34,820.76, 48,017.20 and 30,980.28 is: 42,721.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,820.76 : 48,017.20 = 30,980.28 : x
  2. Step 2: Convert to fraction form
    34,820.76/48,017.20 = 30,980.28/x
  3. Step 3: Cross multiply
    34,820.76x = 48,017.20 × 30,980.28
  4. Step 4: Simplify right side
    34,820.76x = 1,487,586,300.82
  5. Step 5: Solve for x
    x = 1,487,586,300.82/34,820.76
  6. Step 6: Final answer
    x = 42,721.25

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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.