Home / 72,678,359.20-109,017,538.80-59,689,328.80

Finding the Fourth Proportional to 72,678,359.20, 109,017,538.80 and 59,689,328.80

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Solution

The fourth proportional to 72,678,359.20, 109,017,538.80 and 59,689,328.80 is: 89,533,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,678,359.20 : 109,017,538.80 = 59,689,328.80 : x
  2. Step 2: Convert to fraction form
    72,678,359.20/109,017,538.80 = 59,689,328.80/x
  3. Step 3: Cross multiply
    72,678,359.20x = 109,017,538.80 × 59,689,328.80
  4. Step 4: Simplify right side
    72,678,359.20x = 6,507,183,718,399,957
  5. Step 5: Solve for x
    x = 6,507,183,718,399,957/72,678,359.20
  6. Step 6: Final answer
    x = 89,533,993.20

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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.