Home / 72,779,615-100,353,987.42-59,507,382.68

Finding the Fourth Proportional to 72,779,615, 100,353,987.42 and 59,507,382.68

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Solution

The fourth proportional to 72,779,615, 100,353,987.42 and 59,507,382.68 is: 82,053,238.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,779,615 : 100,353,987.42 = 59,507,382.68 : x
  2. Step 2: Convert to fraction form
    72,779,615/100,353,987.42 = 59,507,382.68/x
  3. Step 3: Cross multiply
    72,779,615x = 100,353,987.42 × 59,507,382.68
  4. Step 4: Simplify right side
    72,779,615x = 5,971,803,132,865,846
  5. Step 5: Solve for x
    x = 5,971,803,132,865,846/72,779,615
  6. Step 6: Final answer
    x = 82,053,238.85

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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.