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Finding the Fourth Proportional to 91,848.60, 137,772.90 and 52,409.70

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Solution

The fourth proportional to 91,848.60, 137,772.90 and 52,409.70 is: 78,614.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,848.60 : 137,772.90 = 52,409.70 : x
  2. Step 2: Convert to fraction form
    91,848.60/137,772.90 = 52,409.70/x
  3. Step 3: Cross multiply
    91,848.60x = 137,772.90 × 52,409.70
  4. Step 4: Simplify right side
    91,848.60x = 7,220,636,357.13
  5. Step 5: Solve for x
    x = 7,220,636,357.13/91,848.60
  6. Step 6: Final answer
    x = 78,614.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.