Home / 70,985.28-97,959.96-39,153.72

Finding the Fourth Proportional to 70,985.28, 97,959.96 and 39,153.72

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Solution

The fourth proportional to 70,985.28, 97,959.96 and 39,153.72 is: 54,032.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,985.28 : 97,959.96 = 39,153.72 : x
  2. Step 2: Convert to fraction form
    70,985.28/97,959.96 = 39,153.72/x
  3. Step 3: Cross multiply
    70,985.28x = 97,959.96 × 39,153.72
  4. Step 4: Simplify right side
    70,985.28x = 3,835,496,845.05
  5. Step 5: Solve for x
    x = 3,835,496,845.05/70,985.28
  6. Step 6: Final answer
    x = 54,032.28

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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.