Home / 78,703,315.20-118,054,972.80-40,439,563.20

Finding the Fourth Proportional to 78,703,315.20, 118,054,972.80 and 40,439,563.20

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Solution

The fourth proportional to 78,703,315.20, 118,054,972.80 and 40,439,563.20 is: 60,659,344.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,703,315.20 : 118,054,972.80 = 40,439,563.20 : x
  2. Step 2: Convert to fraction form
    78,703,315.20/118,054,972.80 = 40,439,563.20/x
  3. Step 3: Cross multiply
    78,703,315.20x = 118,054,972.80 × 40,439,563.20
  4. Step 4: Simplify right side
    78,703,315.20x = 4,774,091,533,619,881
  5. Step 5: Solve for x
    x = 4,774,091,533,619,881/78,703,315.20
  6. Step 6: Final answer
    x = 60,659,344.80

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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.