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Finding the Fourth Proportional to 72,600,235.20, 108,900,352.80 and 18,747,547.20

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Solution

The fourth proportional to 72,600,235.20, 108,900,352.80 and 18,747,547.20 is: 28,121,320.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,600,235.20 : 108,900,352.80 = 18,747,547.20 : x
  2. Step 2: Convert to fraction form
    72,600,235.20/108,900,352.80 = 18,747,547.20/x
  3. Step 3: Cross multiply
    72,600,235.20x = 108,900,352.80 × 18,747,547.20
  4. Step 4: Simplify right side
    72,600,235.20x = 2,041,614,504,214,652
  5. Step 5: Solve for x
    x = 2,041,614,504,214,652/72,600,235.20
  6. Step 6: Final answer
    x = 28,121,320.80

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1.5x scale

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.