Home / 47,621.79-65,688.30-30,648.11

Finding the Fourth Proportional to 47,621.79, 65,688.30 and 30,648.11

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Solution

The fourth proportional to 47,621.79, 65,688.30 and 30,648.11 is: 42,275.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,621.79 : 65,688.30 = 30,648.11 : x
  2. Step 2: Convert to fraction form
    47,621.79/65,688.30 = 30,648.11/x
  3. Step 3: Cross multiply
    47,621.79x = 65,688.30 × 30,648.11
  4. Step 4: Simplify right side
    47,621.79x = 2,013,221,915.67
  5. Step 5: Solve for x
    x = 2,013,221,915.67/47,621.79
  6. Step 6: Final answer
    x = 42,275.23

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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.