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Finding the Fourth Proportional to 61,292.40, 84,555.72 and 38,615.64

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Solution

The fourth proportional to 61,292.40, 84,555.72 and 38,615.64 is: 53,272.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,292.40 : 84,555.72 = 38,615.64 : x
  2. Step 2: Convert to fraction form
    61,292.40/84,555.72 = 38,615.64/x
  3. Step 3: Cross multiply
    61,292.40x = 84,555.72 × 38,615.64
  4. Step 4: Simplify right side
    61,292.40x = 3,265,173,243.46
  5. Step 5: Solve for x
    x = 3,265,173,243.46/61,292.40
  6. Step 6: Final answer
    x = 53,272.07

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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.