Home / 90,663.04-135,879.40-51,242.32

Finding the Fourth Proportional to 90,663.04, 135,879.40 and 51,242.32

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Solution

The fourth proportional to 90,663.04, 135,879.40 and 51,242.32 is: 76,798.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,663.04 : 135,879.40 = 51,242.32 : x
  2. Step 2: Convert to fraction form
    90,663.04/135,879.40 = 51,242.32/x
  3. Step 3: Cross multiply
    90,663.04x = 135,879.40 × 51,242.32
  4. Step 4: Simplify right side
    90,663.04x = 6,962,775,696.21
  5. Step 5: Solve for x
    x = 6,962,775,696.21/90,663.04
  6. Step 6: Final answer
    x = 76,798.39

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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.