Home / 85,730.10-128,593.71-23,400.60

Finding the Fourth Proportional to 85,730.10, 128,593.71 and 23,400.60

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Solution

The fourth proportional to 85,730.10, 128,593.71 and 23,400.60 is: 35,100.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,730.10 : 128,593.71 = 23,400.60 : x
  2. Step 2: Convert to fraction form
    85,730.10/128,593.71 = 23,400.60/x
  3. Step 3: Cross multiply
    85,730.10x = 128,593.71 × 23,400.60
  4. Step 4: Simplify right side
    85,730.10x = 3,009,169,970.23
  5. Step 5: Solve for x
    x = 3,009,169,970.23/85,730.10
  6. Step 6: Final answer
    x = 35,100.51

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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.