Home / 72,130.98-99,539.29-43,845.78

Finding the Fourth Proportional to 72,130.98, 99,539.29 and 43,845.78

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Solution

The fourth proportional to 72,130.98, 99,539.29 and 43,845.78 is: 60,506.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,130.98 : 99,539.29 = 43,845.78 : x
  2. Step 2: Convert to fraction form
    72,130.98/99,539.29 = 43,845.78/x
  3. Step 3: Cross multiply
    72,130.98x = 99,539.29 × 43,845.78
  4. Step 4: Simplify right side
    72,130.98x = 4,364,377,810.70
  5. Step 5: Solve for x
    x = 4,364,377,810.70/72,130.98
  6. Step 6: Final answer
    x = 60,506.29

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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.