Home / 90,547.46-135,738.03-31,341.72

Finding the Fourth Proportional to 90,547.46, 135,738.03 and 31,341.72

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Solution

The fourth proportional to 90,547.46, 135,738.03 and 31,341.72 is: 46,983.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,547.46 : 135,738.03 = 31,341.72 : x
  2. Step 2: Convert to fraction form
    90,547.46/135,738.03 = 31,341.72/x
  3. Step 3: Cross multiply
    90,547.46x = 135,738.03 × 31,341.72
  4. Step 4: Simplify right side
    90,547.46x = 4,254,263,747.31
  5. Step 5: Solve for x
    x = 4,254,263,747.31/90,547.46
  6. Step 6: Final answer
    x = 46,983.80

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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.