Home / 8,791,785.76-12,138,589.02-5,489,113.72

Finding the Fourth Proportional to 8,791,785.76, 12,138,589.02 and 5,489,113.72

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Solution

The fourth proportional to 8,791,785.76, 12,138,589.02 and 5,489,113.72 is: 7,578,675.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791,785.76 : 12,138,589.02 = 5,489,113.72 : x
  2. Step 2: Convert to fraction form
    8,791,785.76/12,138,589.02 = 5,489,113.72/x
  3. Step 3: Cross multiply
    8,791,785.76x = 12,138,589.02 × 5,489,113.72
  4. Step 4: Simplify right side
    8,791,785.76x = 66,630,095,531,123.35
  5. Step 5: Solve for x
    x = 66,630,095,531,123.35/8,791,785.76
  6. Step 6: Final answer
    x = 7,578,675.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.