Home / 72,985.16-100,570.74-50,331.08

Finding the Fourth Proportional to 72,985.16, 100,570.74 and 50,331.08

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Solution

The fourth proportional to 72,985.16, 100,570.74 and 50,331.08 is: 69,354.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,985.16 : 100,570.74 = 50,331.08 : x
  2. Step 2: Convert to fraction form
    72,985.16/100,570.74 = 50,331.08/x
  3. Step 3: Cross multiply
    72,985.16x = 100,570.74 × 50,331.08
  4. Step 4: Simplify right side
    72,985.16x = 5,061,833,960.60
  5. Step 5: Solve for x
    x = 5,061,833,960.60/72,985.16
  6. Step 6: Final answer
    x = 69,354.29

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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.