Home / 78,701.50-118,008.96-53,769.70

Finding the Fourth Proportional to 78,701.50, 118,008.96 and 53,769.70

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Solution

The fourth proportional to 78,701.50, 118,008.96 and 53,769.70 is: 80,624.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,701.50 : 118,008.96 = 53,769.70 : x
  2. Step 2: Convert to fraction form
    78,701.50/118,008.96 = 53,769.70/x
  3. Step 3: Cross multiply
    78,701.50x = 118,008.96 × 53,769.70
  4. Step 4: Simplify right side
    78,701.50x = 6,345,306,376.51
  5. Step 5: Solve for x
    x = 6,345,306,376.51/78,701.50
  6. Step 6: Final answer
    x = 80,624.97

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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.