Home / 90,772.74-136,159.71-31,608.21

Finding the Fourth Proportional to 90,772.74, 136,159.71 and 31,608.21

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Solution

The fourth proportional to 90,772.74, 136,159.71 and 31,608.21 is: 47,412.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,772.74 : 136,159.71 = 31,608.21 : x
  2. Step 2: Convert to fraction form
    90,772.74/136,159.71 = 31,608.21/x
  3. Step 3: Cross multiply
    90,772.74x = 136,159.71 × 31,608.21
  4. Step 4: Simplify right side
    90,772.74x = 4,303,763,868.38
  5. Step 5: Solve for x
    x = 4,303,763,868.38/90,772.74
  6. Step 6: Final answer
    x = 47,412.52

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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.