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Finding the Fourth Proportional to 70,299.60, 97,012.56 and 40,083.90

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Solution

The fourth proportional to 70,299.60, 97,012.56 and 40,083.90 is: 55,315.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,299.60 : 97,012.56 = 40,083.90 : x
  2. Step 2: Convert to fraction form
    70,299.60/97,012.56 = 40,083.90/x
  3. Step 3: Cross multiply
    70,299.60x = 97,012.56 × 40,083.90
  4. Step 4: Simplify right side
    70,299.60x = 3,888,641,753.78
  5. Step 5: Solve for x
    x = 3,888,641,753.78/70,299.60
  6. Step 6: Final answer
    x = 55,315.28

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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.