Home / 90,065.68-135,036.06-40,119.28

Finding the Fourth Proportional to 90,065.68, 135,036.06 and 40,119.28

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Solution

The fourth proportional to 90,065.68, 135,036.06 and 40,119.28 is: 60,151.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,065.68 : 135,036.06 = 40,119.28 : x
  2. Step 2: Convert to fraction form
    90,065.68/135,036.06 = 40,119.28/x
  3. Step 3: Cross multiply
    90,065.68x = 135,036.06 × 40,119.28
  4. Step 4: Simplify right side
    90,065.68x = 5,417,549,501.24
  5. Step 5: Solve for x
    x = 5,417,549,501.24/90,065.68
  6. Step 6: Final answer
    x = 60,151.10

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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.