Home / 57,073.50-78,763.76-31,579.45

Finding the Fourth Proportional to 57,073.50, 78,763.76 and 31,579.45

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Solution

The fourth proportional to 57,073.50, 78,763.76 and 31,579.45 is: 43,580.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,073.50 : 78,763.76 = 31,579.45 : x
  2. Step 2: Convert to fraction form
    57,073.50/78,763.76 = 31,579.45/x
  3. Step 3: Cross multiply
    57,073.50x = 78,763.76 × 31,579.45
  4. Step 4: Simplify right side
    57,073.50x = 2,487,316,220.73
  5. Step 5: Solve for x
    x = 2,487,316,220.73/57,073.50
  6. Step 6: Final answer
    x = 43,580.93

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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.