Home / 79,985.31-120,051.77-40,570.11

Finding the Fourth Proportional to 79,985.31, 120,051.77 and 40,570.11

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Solution

The fourth proportional to 79,985.31, 120,051.77 and 40,570.11 is: 60,892.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,985.31 : 120,051.77 = 40,570.11 : x
  2. Step 2: Convert to fraction form
    79,985.31/120,051.77 = 40,570.11/x
  3. Step 3: Cross multiply
    79,985.31x = 120,051.77 × 40,570.11
  4. Step 4: Simplify right side
    79,985.31x = 4,870,513,311.74
  5. Step 5: Solve for x
    x = 4,870,513,311.74/79,985.31
  6. Step 6: Final answer
    x = 60,892.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.