Home / 90,816.90-136,247.01-28,487.34

Finding the Fourth Proportional to 90,816.90, 136,247.01 and 28,487.34

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Solution

The fourth proportional to 90,816.90, 136,247.01 and 28,487.34 is: 42,737.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,816.90 : 136,247.01 = 28,487.34 : x
  2. Step 2: Convert to fraction form
    90,816.90/136,247.01 = 28,487.34/x
  3. Step 3: Cross multiply
    90,816.90x = 136,247.01 × 28,487.34
  4. Step 4: Simplify right side
    90,816.90x = 3,881,314,897.85
  5. Step 5: Solve for x
    x = 3,881,314,897.85/90,816.90
  6. Step 6: Final answer
    x = 42,737.80

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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.