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Finding the Fourth Proportional to 70,445.34, 97,217.25 and 40,230.90

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Solution

The fourth proportional to 70,445.34, 97,217.25 and 40,230.90 is: 55,520.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,445.34 : 97,217.25 = 40,230.90 : x
  2. Step 2: Convert to fraction form
    70,445.34/97,217.25 = 40,230.90/x
  3. Step 3: Cross multiply
    70,445.34x = 97,217.25 × 40,230.90
  4. Step 4: Simplify right side
    70,445.34x = 3,911,137,463.03
  5. Step 5: Solve for x
    x = 3,911,137,463.03/70,445.34
  6. Step 6: Final answer
    x = 55,520.17

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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.