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Finding the Fourth Proportional to 93,580.90, 129,139.57 and 51,139.73

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Solution

The fourth proportional to 93,580.90, 129,139.57 and 51,139.73 is: 70,571.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,580.90 : 129,139.57 = 51,139.73 : x
  2. Step 2: Convert to fraction form
    93,580.90/129,139.57 = 51,139.73/x
  3. Step 3: Cross multiply
    93,580.90x = 129,139.57 × 51,139.73
  4. Step 4: Simplify right side
    93,580.90x = 6,604,162,742.12
  5. Step 5: Solve for x
    x = 6,604,162,742.12/93,580.90
  6. Step 6: Final answer
    x = 70,571.70

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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.