Home / 72,813,897.60-109,220,846.40-66,578,323.20

Finding the Fourth Proportional to 72,813,897.60, 109,220,846.40 and 66,578,323.20

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Solution

The fourth proportional to 72,813,897.60, 109,220,846.40 and 66,578,323.20 is: 99,867,484.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,813,897.60 : 109,220,846.40 = 66,578,323.20 : x
  2. Step 2: Convert to fraction form
    72,813,897.60/109,220,846.40 = 66,578,323.20/x
  3. Step 3: Cross multiply
    72,813,897.60x = 109,220,846.40 × 66,578,323.20
  4. Step 4: Simplify right side
    72,813,897.60x = 7,271,740,811,796,757
  5. Step 5: Solve for x
    x = 7,271,740,811,796,757/72,813,897.60
  6. Step 6: Final answer
    x = 99,867,484.80

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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.