Home / 90,742.40-136,141.29-46,400.30

Finding the Fourth Proportional to 90,742.40, 136,141.29 and 46,400.30

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Solution

The fourth proportional to 90,742.40, 136,141.29 and 46,400.30 is: 69,614.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,742.40 : 136,141.29 = 46,400.30 : x
  2. Step 2: Convert to fraction form
    90,742.40/136,141.29 = 46,400.30/x
  3. Step 3: Cross multiply
    90,742.40x = 136,141.29 × 46,400.30
  4. Step 4: Simplify right side
    90,742.40x = 6,316,996,528.21
  5. Step 5: Solve for x
    x = 6,316,996,528.21/90,742.40
  6. Step 6: Final answer
    x = 69,614.61

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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.