Home / 77,779,811.60-116,641,723.80-39,428,579.60

Finding the Fourth Proportional to 77,779,811.60, 116,641,723.80 and 39,428,579.60

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Solution

The fourth proportional to 77,779,811.60, 116,641,723.80 and 39,428,579.60 is: 59,128,678.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,779,811.60 : 116,641,723.80 = 39,428,579.60 : x
  2. Step 2: Convert to fraction form
    77,779,811.60/116,641,723.80 = 39,428,579.60/x
  3. Step 3: Cross multiply
    77,779,811.60x = 116,641,723.80 × 39,428,579.60
  4. Step 4: Simplify right side
    77,779,811.60x = 4,599,017,491,529,515
  5. Step 5: Solve for x
    x = 4,599,017,491,529,515/77,779,811.60
  6. Step 6: Final answer
    x = 59,128,678.73

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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.