Home / 93,172.80-128,580-50,732.16

Finding the Fourth Proportional to 93,172.80, 128,580 and 50,732.16

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Solution

The fourth proportional to 93,172.80, 128,580 and 50,732.16 is: 70,011.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,172.80 : 128,580 = 50,732.16 : x
  2. Step 2: Convert to fraction form
    93,172.80/128,580 = 50,732.16/x
  3. Step 3: Cross multiply
    93,172.80x = 128,580 × 50,732.16
  4. Step 4: Simplify right side
    93,172.80x = 6,523,141,132.80
  5. Step 5: Solve for x
    x = 6,523,141,132.80/93,172.80
  6. Step 6: Final answer
    x = 70,011.22

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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.