Home / 71,971.35-99,347.85-56,618.16

Finding the Fourth Proportional to 71,971.35, 99,347.85 and 56,618.16

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Solution

The fourth proportional to 71,971.35, 99,347.85 and 56,618.16 is: 78,154.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,971.35 : 99,347.85 = 56,618.16 : x
  2. Step 2: Convert to fraction form
    71,971.35/99,347.85 = 56,618.16/x
  3. Step 3: Cross multiply
    71,971.35x = 99,347.85 × 56,618.16
  4. Step 4: Simplify right side
    71,971.35x = 5,624,892,466.96
  5. Step 5: Solve for x
    x = 5,624,892,466.96/71,971.35
  6. Step 6: Final answer
    x = 78,154.61

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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.