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Finding the Fourth Proportional to 52,779,686.80, 79,169,530.20 and 18,704,477.20

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Solution

The fourth proportional to 52,779,686.80, 79,169,530.20 and 18,704,477.20 is: 28,056,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,779,686.80 : 79,169,530.20 = 18,704,477.20 : x
  2. Step 2: Convert to fraction form
    52,779,686.80/79,169,530.20 = 18,704,477.20/x
  3. Step 3: Cross multiply
    52,779,686.80x = 79,169,530.20 × 18,704,477.20
  4. Step 4: Simplify right side
    52,779,686.80x = 1,480,824,672,560,611.50
  5. Step 5: Solve for x
    x = 1,480,824,672,560,611.50/52,779,686.80
  6. Step 6: Final answer
    x = 28,056,715.80

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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.