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Finding the Fourth Proportional to 84,963.90, 127,445.84 and 40,455.71

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Solution

The fourth proportional to 84,963.90, 127,445.84 and 40,455.71 is: 60,683.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,963.90 : 127,445.84 = 40,455.71 : x
  2. Step 2: Convert to fraction form
    84,963.90/127,445.84 = 40,455.71/x
  3. Step 3: Cross multiply
    84,963.90x = 127,445.84 × 40,455.71
  4. Step 4: Simplify right side
    84,963.90x = 5,155,911,943.75
  5. Step 5: Solve for x
    x = 5,155,911,943.75/84,963.90
  6. Step 6: Final answer
    x = 60,683.56

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1.5x scale

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.