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Finding the Fourth Proportional to 70,878.85, 97,809.02 and 42,230.97

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Solution

The fourth proportional to 70,878.85, 97,809.02 and 42,230.97 is: 58,276.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,878.85 : 97,809.02 = 42,230.97 : x
  2. Step 2: Convert to fraction form
    70,878.85/97,809.02 = 42,230.97/x
  3. Step 3: Cross multiply
    70,878.85x = 97,809.02 × 42,230.97
  4. Step 4: Simplify right side
    70,878.85x = 4,130,569,736.56
  5. Step 5: Solve for x
    x = 4,130,569,736.56/70,878.85
  6. Step 6: Final answer
    x = 58,276.48

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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.