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Finding the Fourth Proportional to 70,888.80, 97,829.07 and 40,680.26

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Solution

The fourth proportional to 70,888.80, 97,829.07 and 40,680.26 is: 56,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,888.80 : 97,829.07 = 40,680.26 : x
  2. Step 2: Convert to fraction form
    70,888.80/97,829.07 = 40,680.26/x
  3. Step 3: Cross multiply
    70,888.80x = 97,829.07 × 40,680.26
  4. Step 4: Simplify right side
    70,888.80x = 3,979,711,728.32
  5. Step 5: Solve for x
    x = 3,979,711,728.32/70,888.80
  6. Step 6: Final answer
    x = 56,140.20

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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.