Home / 76,709,206.12-114,932,826.78-42,194,479.72

Finding the Fourth Proportional to 76,709,206.12, 114,932,826.78 and 42,194,479.72

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Solution

The fourth proportional to 76,709,206.12, 114,932,826.78 and 42,194,479.72 is: 63,219,671.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,709,206.12 : 114,932,826.78 = 42,194,479.72 : x
  2. Step 2: Convert to fraction form
    76,709,206.12/114,932,826.78 = 42,194,479.72/x
  3. Step 3: Cross multiply
    76,709,206.12x = 114,932,826.78 × 42,194,479.72
  4. Step 4: Simplify right side
    76,709,206.12x = 4,849,530,828,730,983
  5. Step 5: Solve for x
    x = 4,849,530,828,730,983/76,709,206.12
  6. Step 6: Final answer
    x = 63,219,671.72

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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.