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Finding the Fourth Proportional to 91,980.84, 127,029.93 and 63,374.88

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Solution

The fourth proportional to 91,980.84, 127,029.93 and 63,374.88 is: 87,523.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,980.84 : 127,029.93 = 63,374.88 : x
  2. Step 2: Convert to fraction form
    91,980.84/127,029.93 = 63,374.88/x
  3. Step 3: Cross multiply
    91,980.84x = 127,029.93 × 63,374.88
  4. Step 4: Simplify right side
    91,980.84x = 8,050,506,570.16
  5. Step 5: Solve for x
    x = 8,050,506,570.16/91,980.84
  6. Step 6: Final answer
    x = 87,523.73

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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.