Home / 78,703,315.70-118,054,973.55-40,439,563.70

Finding the Fourth Proportional to 78,703,315.70, 118,054,973.55 and 40,439,563.70

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Solution

The fourth proportional to 78,703,315.70, 118,054,973.55 and 40,439,563.70 is: 60,659,345.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,703,315.70 : 118,054,973.55 = 40,439,563.70 : x
  2. Step 2: Convert to fraction form
    78,703,315.70/118,054,973.55 = 40,439,563.70/x
  3. Step 3: Cross multiply
    78,703,315.70x = 118,054,973.55 × 40,439,563.70
  4. Step 4: Simplify right side
    78,703,315.70x = 4,774,091,622,977,040
  5. Step 5: Solve for x
    x = 4,774,091,622,977,040/78,703,315.70
  6. Step 6: Final answer
    x = 60,659,345.55

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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.