Home / 72,430.80-99,949.48-40,167.09

Finding the Fourth Proportional to 72,430.80, 99,949.48 and 40,167.09

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Solution

The fourth proportional to 72,430.80, 99,949.48 and 40,167.09 is: 55,427.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,430.80 : 99,949.48 = 40,167.09 : x
  2. Step 2: Convert to fraction form
    72,430.80/99,949.48 = 40,167.09/x
  3. Step 3: Cross multiply
    72,430.80x = 99,949.48 × 40,167.09
  4. Step 4: Simplify right side
    72,430.80x = 4,014,679,058.03
  5. Step 5: Solve for x
    x = 4,014,679,058.03/72,430.80
  6. Step 6: Final answer
    x = 55,427.79

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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.