Home / 85,942.04-118,520.70-57,277.80

Finding the Fourth Proportional to 85,942.04, 118,520.70 and 57,277.80

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Solution

The fourth proportional to 85,942.04, 118,520.70 and 57,277.80 is: 78,990.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,942.04 : 118,520.70 = 57,277.80 : x
  2. Step 2: Convert to fraction form
    85,942.04/118,520.70 = 57,277.80/x
  3. Step 3: Cross multiply
    85,942.04x = 118,520.70 × 57,277.80
  4. Step 4: Simplify right side
    85,942.04x = 6,788,604,950.46
  5. Step 5: Solve for x
    x = 6,788,604,950.46/85,942.04
  6. Step 6: Final answer
    x = 78,990.50

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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.