Home / 57,136.19-78,848.10-31,985.69

Finding the Fourth Proportional to 57,136.19, 78,848.10 and 31,985.69

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Solution

The fourth proportional to 57,136.19, 78,848.10 and 31,985.69 is: 44,140.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,136.19 : 78,848.10 = 31,985.69 : x
  2. Step 2: Convert to fraction form
    57,136.19/78,848.10 = 31,985.69/x
  3. Step 3: Cross multiply
    57,136.19x = 78,848.10 × 31,985.69
  4. Step 4: Simplify right side
    57,136.19x = 2,522,010,489.45
  5. Step 5: Solve for x
    x = 2,522,010,489.45/57,136.19
  6. Step 6: Final answer
    x = 44,140.34

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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.