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Finding the Fourth Proportional to 71,297.42, 98,387.60 and 39,465.63

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Solution

The fourth proportional to 71,297.42, 98,387.60 and 39,465.63 is: 54,461.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,297.42 : 98,387.60 = 39,465.63 : x
  2. Step 2: Convert to fraction form
    71,297.42/98,387.60 = 39,465.63/x
  3. Step 3: Cross multiply
    71,297.42x = 98,387.60 × 39,465.63
  4. Step 4: Simplify right side
    71,297.42x = 3,882,928,420.86
  5. Step 5: Solve for x
    x = 3,882,928,420.86/71,297.42
  6. Step 6: Final answer
    x = 54,461.00

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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.