Home / 90,275.78-135,330.75-31,097.39

Finding the Fourth Proportional to 90,275.78, 135,330.75 and 31,097.39

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Solution

The fourth proportional to 90,275.78, 135,330.75 and 31,097.39 is: 46,617.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,275.78 : 135,330.75 = 31,097.39 : x
  2. Step 2: Convert to fraction form
    90,275.78/135,330.75 = 31,097.39/x
  3. Step 3: Cross multiply
    90,275.78x = 135,330.75 × 31,097.39
  4. Step 4: Simplify right side
    90,275.78x = 4,208,432,812.29
  5. Step 5: Solve for x
    x = 4,208,432,812.29/90,275.78
  6. Step 6: Final answer
    x = 46,617.52

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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.