Home / 85,570.57-128,328.56-29,397.14

Finding the Fourth Proportional to 85,570.57, 128,328.56 and 29,397.14

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Solution

The fourth proportional to 85,570.57, 128,328.56 and 29,397.14 is: 44,086.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,570.57 : 128,328.56 = 29,397.14 : x
  2. Step 2: Convert to fraction form
    85,570.57/128,328.56 = 29,397.14/x
  3. Step 3: Cross multiply
    85,570.57x = 128,328.56 × 29,397.14
  4. Step 4: Simplify right side
    85,570.57x = 3,772,492,644.32
  5. Step 5: Solve for x
    x = 3,772,492,644.32/85,570.57
  6. Step 6: Final answer
    x = 44,086.33

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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.