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Finding the Fourth Proportional to 70,157.56, 96,772.38 and 42,920.92

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Solution

The fourth proportional to 70,157.56, 96,772.38 and 42,920.92 is: 59,203.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,157.56 : 96,772.38 = 42,920.92 : x
  2. Step 2: Convert to fraction form
    70,157.56/96,772.38 = 42,920.92/x
  3. Step 3: Cross multiply
    70,157.56x = 96,772.38 × 42,920.92
  4. Step 4: Simplify right side
    70,157.56x = 4,153,559,580.19
  5. Step 5: Solve for x
    x = 4,153,559,580.19/70,157.56
  6. Step 6: Final answer
    x = 59,203.31

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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.