Home / 93,235.36-128,689.68-57,431.20

Finding the Fourth Proportional to 93,235.36, 128,689.68 and 57,431.20

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Solution

The fourth proportional to 93,235.36, 128,689.68 and 57,431.20 is: 79,270.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,235.36 : 128,689.68 = 57,431.20 : x
  2. Step 2: Convert to fraction form
    93,235.36/128,689.68 = 57,431.20/x
  3. Step 3: Cross multiply
    93,235.36x = 128,689.68 × 57,431.20
  4. Step 4: Simplify right side
    93,235.36x = 7,390,802,750.02
  5. Step 5: Solve for x
    x = 7,390,802,750.02/93,235.36
  6. Step 6: Final answer
    x = 79,270.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.