Home / 72,153.50-99,563.19-39,883.75

Finding the Fourth Proportional to 72,153.50, 99,563.19 and 39,883.75

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Solution

The fourth proportional to 72,153.50, 99,563.19 and 39,883.75 is: 55,034.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,153.50 : 99,563.19 = 39,883.75 : x
  2. Step 2: Convert to fraction form
    72,153.50/99,563.19 = 39,883.75/x
  3. Step 3: Cross multiply
    72,153.50x = 99,563.19 × 39,883.75
  4. Step 4: Simplify right side
    72,153.50x = 3,970,953,130.25
  5. Step 5: Solve for x
    x = 3,970,953,130.25/72,153.50
  6. Step 6: Final answer
    x = 55,034.80

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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.