Home / 85,510.50-118,037.40-76,542.18

Finding the Fourth Proportional to 85,510.50, 118,037.40 and 76,542.18

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Solution

The fourth proportional to 85,510.50, 118,037.40 and 76,542.18 is: 105,657.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,510.50 : 118,037.40 = 76,542.18 : x
  2. Step 2: Convert to fraction form
    85,510.50/118,037.40 = 76,542.18/x
  3. Step 3: Cross multiply
    85,510.50x = 118,037.40 × 76,542.18
  4. Step 4: Simplify right side
    85,510.50x = 9,034,839,917.53
  5. Step 5: Solve for x
    x = 9,034,839,917.53/85,510.50
  6. Step 6: Final answer
    x = 105,657.67

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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.