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Finding the Fourth Proportional to 92,706.60, 128,040.24 and 62,439.36

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Solution

The fourth proportional to 92,706.60, 128,040.24 and 62,439.36 is: 86,237.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,706.60 : 128,040.24 = 62,439.36 : x
  2. Step 2: Convert to fraction form
    92,706.60/128,040.24 = 62,439.36/x
  3. Step 3: Cross multiply
    92,706.60x = 128,040.24 × 62,439.36
  4. Step 4: Simplify right side
    92,706.60x = 7,994,750,639.85
  5. Step 5: Solve for x
    x = 7,994,750,639.85/92,706.60
  6. Step 6: Final answer
    x = 86,237.12

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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.