Home / 90,708.57-136,075.18-31,536.59

Finding the Fourth Proportional to 90,708.57, 136,075.18 and 31,536.59

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Solution

The fourth proportional to 90,708.57, 136,075.18 and 31,536.59 is: 47,309.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,708.57 : 136,075.18 = 31,536.59 : x
  2. Step 2: Convert to fraction form
    90,708.57/136,075.18 = 31,536.59/x
  3. Step 3: Cross multiply
    90,708.57x = 136,075.18 × 31,536.59
  4. Step 4: Simplify right side
    90,708.57x = 4,291,346,741.81
  5. Step 5: Solve for x
    x = 4,291,346,741.81/90,708.57
  6. Step 6: Final answer
    x = 47,309.16

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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.