Home / 57,688.80-86,533.20-42,021.60

Finding the Fourth Proportional to 57,688.80, 86,533.20 and 42,021.60

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Solution

The fourth proportional to 57,688.80, 86,533.20 and 42,021.60 is: 63,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,688.80 : 86,533.20 = 42,021.60 : x
  2. Step 2: Convert to fraction form
    57,688.80/86,533.20 = 42,021.60/x
  3. Step 3: Cross multiply
    57,688.80x = 86,533.20 × 42,021.60
  4. Step 4: Simplify right side
    57,688.80x = 3,636,263,517.12
  5. Step 5: Solve for x
    x = 3,636,263,517.12/57,688.80
  6. Step 6: Final answer
    x = 63,032.40

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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.