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Finding the Fourth Proportional to 91,699.39, 126,542.25 and 51,415.46

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Solution

The fourth proportional to 91,699.39, 126,542.25 and 51,415.46 is: 70,951.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,699.39 : 126,542.25 = 51,415.46 : x
  2. Step 2: Convert to fraction form
    91,699.39/126,542.25 = 51,415.46/x
  3. Step 3: Cross multiply
    91,699.39x = 126,542.25 × 51,415.46
  4. Step 4: Simplify right side
    91,699.39x = 6,506,227,835.01
  5. Step 5: Solve for x
    x = 6,506,227,835.01/91,699.39
  6. Step 6: Final answer
    x = 70,951.70

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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.