Home / 84,528,005.70-126,792,008.55-78,817,311.30

Finding the Fourth Proportional to 84,528,005.70, 126,792,008.55 and 78,817,311.30

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Solution

The fourth proportional to 84,528,005.70, 126,792,008.55 and 78,817,311.30 is: 118,225,966.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,528,005.70 : 126,792,008.55 = 78,817,311.30 : x
  2. Step 2: Convert to fraction form
    84,528,005.70/126,792,008.55 = 78,817,311.30/x
  3. Step 3: Cross multiply
    84,528,005.70x = 126,792,008.55 × 78,817,311.30
  4. Step 4: Simplify right side
    84,528,005.70x = 9,993,405,208,237,612
  5. Step 5: Solve for x
    x = 9,993,405,208,237,612/84,528,005.70
  6. Step 6: Final answer
    x = 118,225,966.95

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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.