Home / 68,985.60-95,155.20-56,390.40

Finding the Fourth Proportional to 68,985.60, 95,155.20 and 56,390.40

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Solution

The fourth proportional to 68,985.60, 95,155.20 and 56,390.40 is: 77,782.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,985.60 : 95,155.20 = 56,390.40 : x
  2. Step 2: Convert to fraction form
    68,985.60/95,155.20 = 56,390.40/x
  3. Step 3: Cross multiply
    68,985.60x = 95,155.20 × 56,390.40
  4. Step 4: Simplify right side
    68,985.60x = 5,365,839,790.08
  5. Step 5: Solve for x
    x = 5,365,839,790.08/68,985.60
  6. Step 6: Final answer
    x = 77,782.03

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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.