Home / 90,990,012.70-136,485,019.05-56,552,635.90

Finding the Fourth Proportional to 90,990,012.70, 136,485,019.05 and 56,552,635.90

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Solution

The fourth proportional to 90,990,012.70, 136,485,019.05 and 56,552,635.90 is: 84,828,953.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,990,012.70 : 136,485,019.05 = 56,552,635.90 : x
  2. Step 2: Convert to fraction form
    90,990,012.70/136,485,019.05 = 56,552,635.90/x
  3. Step 3: Cross multiply
    90,990,012.70x = 136,485,019.05 × 56,552,635.90
  4. Step 4: Simplify right side
    90,990,012.70x = 7,718,587,588,139,214
  5. Step 5: Solve for x
    x = 7,718,587,588,139,214/90,990,012.70
  6. Step 6: Final answer
    x = 84,828,953.85

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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.