Home / 70,945.60-97,905.52-39,113.76

Finding the Fourth Proportional to 70,945.60, 97,905.52 and 39,113.76

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Solution

The fourth proportional to 70,945.60, 97,905.52 and 39,113.76 is: 53,977.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,945.60 : 97,905.52 = 39,113.76 : x
  2. Step 2: Convert to fraction form
    70,945.60/97,905.52 = 39,113.76/x
  3. Step 3: Cross multiply
    70,945.60x = 97,905.52 × 39,113.76
  4. Step 4: Simplify right side
    70,945.60x = 3,829,453,011.96
  5. Step 5: Solve for x
    x = 3,829,453,011.96/70,945.60
  6. Step 6: Final answer
    x = 53,977.32

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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.