Home / 51,435.18-70,981.11-30,215.34

Finding the Fourth Proportional to 51,435.18, 70,981.11 and 30,215.34

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Solution

The fourth proportional to 51,435.18, 70,981.11 and 30,215.34 is: 41,697.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,435.18 : 70,981.11 = 30,215.34 : x
  2. Step 2: Convert to fraction form
    51,435.18/70,981.11 = 30,215.34/x
  3. Step 3: Cross multiply
    51,435.18x = 70,981.11 × 30,215.34
  4. Step 4: Simplify right side
    51,435.18x = 2,144,718,372.23
  5. Step 5: Solve for x
    x = 2,144,718,372.23/51,435.18
  6. Step 6: Final answer
    x = 41,697.50

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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.