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Finding the Fourth Proportional to 70,342.83, 97,080.90 and 40,135.59

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Solution

The fourth proportional to 70,342.83, 97,080.90 and 40,135.59 is: 55,391.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,342.83 : 97,080.90 = 40,135.59 : x
  2. Step 2: Convert to fraction form
    70,342.83/97,080.90 = 40,135.59/x
  3. Step 3: Cross multiply
    70,342.83x = 97,080.90 × 40,135.59
  4. Step 4: Simplify right side
    70,342.83x = 3,896,399,199.23
  5. Step 5: Solve for x
    x = 3,896,399,199.23/70,342.83
  6. Step 6: Final answer
    x = 55,391.56

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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.