Home / 90,709.07-136,075.93-31,537.09

Finding the Fourth Proportional to 90,709.07, 136,075.93 and 31,537.09

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Solution

The fourth proportional to 90,709.07, 136,075.93 and 31,537.09 is: 47,309.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,709.07 : 136,075.93 = 31,537.09 : x
  2. Step 2: Convert to fraction form
    90,709.07/136,075.93 = 31,537.09/x
  3. Step 3: Cross multiply
    90,709.07x = 136,075.93 × 31,537.09
  4. Step 4: Simplify right side
    90,709.07x = 4,291,438,432.21
  5. Step 5: Solve for x
    x = 4,291,438,432.21/90,709.07
  6. Step 6: Final answer
    x = 47,309.91

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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.