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Finding the Fourth Proportional to 70,047.58, 96,661.70 and 39,840.24

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Solution

The fourth proportional to 70,047.58, 96,661.70 and 39,840.24 is: 54,977.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,047.58 : 96,661.70 = 39,840.24 : x
  2. Step 2: Convert to fraction form
    70,047.58/96,661.70 = 39,840.24/x
  3. Step 3: Cross multiply
    70,047.58x = 96,661.70 × 39,840.24
  4. Step 4: Simplify right side
    70,047.58x = 3,851,025,326.81
  5. Step 5: Solve for x
    x = 3,851,025,326.81/70,047.58
  6. Step 6: Final answer
    x = 54,977.28

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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.