Home / 90,741.64-136,112.48-28,417

Finding the Fourth Proportional to 90,741.64, 136,112.48 and 28,417

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Solution

The fourth proportional to 90,741.64, 136,112.48 and 28,417 is: 42,625.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,741.64 : 136,112.48 = 28,417 : x
  2. Step 2: Convert to fraction form
    90,741.64/136,112.48 = 28,417/x
  3. Step 3: Cross multiply
    90,741.64x = 136,112.48 × 28,417
  4. Step 4: Simplify right side
    90,741.64x = 3,867,908,344.16
  5. Step 5: Solve for x
    x = 3,867,908,344.16/90,741.64
  6. Step 6: Final answer
    x = 42,625.51

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Double scale
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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.