Home / 84,528,004.20-126,792,006.30-78,817,309.80

Finding the Fourth Proportional to 84,528,004.20, 126,792,006.30 and 78,817,309.80

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Solution

The fourth proportional to 84,528,004.20, 126,792,006.30 and 78,817,309.80 is: 118,225,964.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,528,004.20 : 126,792,006.30 = 78,817,309.80 : x
  2. Step 2: Convert to fraction form
    84,528,004.20/126,792,006.30 = 78,817,309.80/x
  3. Step 3: Cross multiply
    84,528,004.20x = 126,792,006.30 × 78,817,309.80
  4. Step 4: Simplify right side
    84,528,004.20x = 9,993,404,840,710,652
  5. Step 5: Solve for x
    x = 9,993,404,840,710,652/84,528,004.20
  6. Step 6: Final answer
    x = 118,225,964.70

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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.