Home / 47,256.20-70,916.70-20,979.80

Finding the Fourth Proportional to 47,256.20, 70,916.70 and 20,979.80

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Solution

The fourth proportional to 47,256.20, 70,916.70 and 20,979.80 is: 31,484.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,256.20 : 70,916.70 = 20,979.80 : x
  2. Step 2: Convert to fraction form
    47,256.20/70,916.70 = 20,979.80/x
  3. Step 3: Cross multiply
    47,256.20x = 70,916.70 × 20,979.80
  4. Step 4: Simplify right side
    47,256.20x = 1,487,818,182.66
  5. Step 5: Solve for x
    x = 1,487,818,182.66/47,256.20
  6. Step 6: Final answer
    x = 31,484.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.