Home / 72,372.72-99,876.60-40,534.32

Finding the Fourth Proportional to 72,372.72, 99,876.60 and 40,534.32

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Solution

The fourth proportional to 72,372.72, 99,876.60 and 40,534.32 is: 55,938.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,372.72 : 99,876.60 = 40,534.32 : x
  2. Step 2: Convert to fraction form
    72,372.72/99,876.60 = 40,534.32/x
  3. Step 3: Cross multiply
    72,372.72x = 99,876.60 × 40,534.32
  4. Step 4: Simplify right side
    72,372.72x = 4,048,430,064.91
  5. Step 5: Solve for x
    x = 4,048,430,064.91/72,372.72
  6. Step 6: Final answer
    x = 55,938.62

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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.