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Finding the Fourth Proportional to 90,977.13, 125,600.54 and 60,813.54

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Solution

The fourth proportional to 90,977.13, 125,600.54 and 60,813.54 is: 83,957.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,977.13 : 125,600.54 = 60,813.54 : x
  2. Step 2: Convert to fraction form
    90,977.13/125,600.54 = 60,813.54/x
  3. Step 3: Cross multiply
    90,977.13x = 125,600.54 × 60,813.54
  4. Step 4: Simplify right side
    90,977.13x = 7,638,213,159.24
  5. Step 5: Solve for x
    x = 7,638,213,159.24/90,977.13
  6. Step 6: Final answer
    x = 83,957.51

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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.