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Finding the Fourth Proportional to 61,272.40, 85,606.40 and 61,272.40

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Solution

The fourth proportional to 61,272.40, 85,606.40 and 61,272.40 is: 85,606.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,272.40 : 85,606.40 = 61,272.40 : x
  2. Step 2: Convert to fraction form
    61,272.40/85,606.40 = 61,272.40/x
  3. Step 3: Cross multiply
    61,272.40x = 85,606.40 × 61,272.40
  4. Step 4: Simplify right side
    61,272.40x = 5,245,309,583.36
  5. Step 5: Solve for x
    x = 5,245,309,583.36/61,272.40
  6. Step 6: Final answer
    x = 85,606.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.