Home / 90,674.60-136,011.80-31,510.28

Finding the Fourth Proportional to 90,674.60, 136,011.80 and 31,510.28

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Solution

The fourth proportional to 90,674.60, 136,011.80 and 31,510.28 is: 47,265.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,674.60 : 136,011.80 = 31,510.28 : x
  2. Step 2: Convert to fraction form
    90,674.60/136,011.80 = 31,510.28/x
  3. Step 3: Cross multiply
    90,674.60x = 136,011.80 × 31,510.28
  4. Step 4: Simplify right side
    90,674.60x = 4,285,769,063.69
  5. Step 5: Solve for x
    x = 4,285,769,063.69/90,674.60
  6. Step 6: Final answer
    x = 47,265.38

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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.