Home / 72,813,949.10-109,220,923.65-66,578,374.70

Finding the Fourth Proportional to 72,813,949.10, 109,220,923.65 and 66,578,374.70

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Solution

The fourth proportional to 72,813,949.10, 109,220,923.65 and 66,578,374.70 is: 99,867,562.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,813,949.10 : 109,220,923.65 = 66,578,374.70 : x
  2. Step 2: Convert to fraction form
    72,813,949.10/109,220,923.65 = 66,578,374.70/x
  3. Step 3: Cross multiply
    72,813,949.10x = 109,220,923.65 × 66,578,374.70
  4. Step 4: Simplify right side
    72,813,949.10x = 7,271,751,579,849,792
  5. Step 5: Solve for x
    x = 7,271,751,579,849,792/72,813,949.10
  6. Step 6: Final answer
    x = 99,867,562.05

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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.