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Finding the Fourth Proportional to 88,901.55, 133,405.38 and 31,970.70

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Solution

The fourth proportional to 88,901.55, 133,405.38 and 31,970.70 is: 47,975.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,901.55 : 133,405.38 = 31,970.70 : x
  2. Step 2: Convert to fraction form
    88,901.55/133,405.38 = 31,970.70/x
  3. Step 3: Cross multiply
    88,901.55x = 133,405.38 × 31,970.70
  4. Step 4: Simplify right side
    88,901.55x = 4,265,063,382.37
  5. Step 5: Solve for x
    x = 4,265,063,382.37/88,901.55
  6. Step 6: Final answer
    x = 47,975.13

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1.5x scale

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.