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Finding the Fourth Proportional to 61,120.60, 84,349.92 and 45,986.16

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Solution

The fourth proportional to 61,120.60, 84,349.92 and 45,986.16 is: 63,463.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,120.60 : 84,349.92 = 45,986.16 : x
  2. Step 2: Convert to fraction form
    61,120.60/84,349.92 = 45,986.16/x
  3. Step 3: Cross multiply
    61,120.60x = 84,349.92 × 45,986.16
  4. Step 4: Simplify right side
    61,120.60x = 3,878,928,917.11
  5. Step 5: Solve for x
    x = 3,878,928,917.11/61,120.60
  6. Step 6: Final answer
    x = 63,463.53

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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.