Home / 85,934.32-128,748.90-35,904.28

Finding the Fourth Proportional to 85,934.32, 128,748.90 and 35,904.28

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Solution

The fourth proportional to 85,934.32, 128,748.90 and 35,904.28 is: 53,792.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,934.32 : 128,748.90 = 35,904.28 : x
  2. Step 2: Convert to fraction form
    85,934.32/128,748.90 = 35,904.28/x
  3. Step 3: Cross multiply
    85,934.32x = 128,748.90 × 35,904.28
  4. Step 4: Simplify right side
    85,934.32x = 4,622,636,555.29
  5. Step 5: Solve for x
    x = 4,622,636,555.29/85,934.32
  6. Step 6: Final answer
    x = 53,792.67

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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.