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Finding the Fourth Proportional to 91,272.25, 125,955.71 and 51,528.25

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Solution

The fourth proportional to 91,272.25, 125,955.71 and 51,528.25 is: 71,108.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,272.25 : 125,955.71 = 51,528.25 : x
  2. Step 2: Convert to fraction form
    91,272.25/125,955.71 = 51,528.25/x
  3. Step 3: Cross multiply
    91,272.25x = 125,955.71 × 51,528.25
  4. Step 4: Simplify right side
    91,272.25x = 6,490,277,313.81
  5. Step 5: Solve for x
    x = 6,490,277,313.81/91,272.25
  6. Step 6: Final answer
    x = 71,108.99

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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.