Home / 93,385.12-128,847.36-55,632.64

Finding the Fourth Proportional to 93,385.12, 128,847.36 and 55,632.64

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Solution

The fourth proportional to 93,385.12, 128,847.36 and 55,632.64 is: 76,758.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,385.12 : 128,847.36 = 55,632.64 : x
  2. Step 2: Convert to fraction form
    93,385.12/128,847.36 = 55,632.64/x
  3. Step 3: Cross multiply
    93,385.12x = 128,847.36 × 55,632.64
  4. Step 4: Simplify right side
    93,385.12x = 7,168,118,793.83
  5. Step 5: Solve for x
    x = 7,168,118,793.83/93,385.12
  6. Step 6: Final answer
    x = 76,758.68

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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.