Home / 85,070.78-127,632.99-40,090.32

Finding the Fourth Proportional to 85,070.78, 127,632.99 and 40,090.32

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Solution

The fourth proportional to 85,070.78, 127,632.99 and 40,090.32 is: 60,148.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,070.78 : 127,632.99 = 40,090.32 : x
  2. Step 2: Convert to fraction form
    85,070.78/127,632.99 = 40,090.32/x
  3. Step 3: Cross multiply
    85,070.78x = 127,632.99 × 40,090.32
  4. Step 4: Simplify right side
    85,070.78x = 5,116,847,411.66
  5. Step 5: Solve for x
    x = 5,116,847,411.66/85,070.78
  6. Step 6: Final answer
    x = 60,148.12

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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.