Home / 78,143,931-107,838,624.78-43,341,950.52

Finding the Fourth Proportional to 78,143,931, 107,838,624.78 and 43,341,950.52

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Solution

The fourth proportional to 78,143,931, 107,838,624.78 and 43,341,950.52 is: 59,811,891.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,143,931 : 107,838,624.78 = 43,341,950.52 : x
  2. Step 2: Convert to fraction form
    78,143,931/107,838,624.78 = 43,341,950.52/x
  3. Step 3: Cross multiply
    78,143,931x = 107,838,624.78 × 43,341,950.52
  4. Step 4: Simplify right side
    78,143,931x = 4,673,936,339,359,606
  5. Step 5: Solve for x
    x = 4,673,936,339,359,606/78,143,931
  6. Step 6: Final answer
    x = 59,811,891.72

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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.