Home / 28,033,689.60-42,042,661.20-8,870,320.80

Finding the Fourth Proportional to 28,033,689.60, 42,042,661.20 and 8,870,320.80

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Solution

The fourth proportional to 28,033,689.60, 42,042,661.20 and 8,870,320.80 is: 13,302,989.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,033,689.60 : 42,042,661.20 = 8,870,320.80 : x
  2. Step 2: Convert to fraction form
    28,033,689.60/42,042,661.20 = 8,870,320.80/x
  3. Step 3: Cross multiply
    28,033,689.60x = 42,042,661.20 × 8,870,320.80
  4. Step 4: Simplify right side
    28,033,689.60x = 372,931,892,129,713
  5. Step 5: Solve for x
    x = 372,931,892,129,713/28,033,689.60
  6. Step 6: Final answer
    x = 13,302,989.99

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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.