Home / 47,938.78-66,155.58-28,818.77

Finding the Fourth Proportional to 47,938.78, 66,155.58 and 28,818.77

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Solution

The fourth proportional to 47,938.78, 66,155.58 and 28,818.77 is: 39,769.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,938.78 : 66,155.58 = 28,818.77 : x
  2. Step 2: Convert to fraction form
    47,938.78/66,155.58 = 28,818.77/x
  3. Step 3: Cross multiply
    47,938.78x = 66,155.58 × 28,818.77
  4. Step 4: Simplify right side
    47,938.78x = 1,906,522,113.46
  5. Step 5: Solve for x
    x = 1,906,522,113.46/47,938.78
  6. Step 6: Final answer
    x = 39,769.93

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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.