Home / 78,734,777.80-118,102,166.70-21,232,861.60

Finding the Fourth Proportional to 78,734,777.80, 118,102,166.70 and 21,232,861.60

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Solution

The fourth proportional to 78,734,777.80, 118,102,166.70 and 21,232,861.60 is: 31,849,292.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,734,777.80 : 118,102,166.70 = 21,232,861.60 : x
  2. Step 2: Convert to fraction form
    78,734,777.80/118,102,166.70 = 21,232,861.60/x
  3. Step 3: Cross multiply
    78,734,777.80x = 118,102,166.70 × 21,232,861.60
  4. Step 4: Simplify right side
    78,734,777.80x = 2,507,646,960,201,229
  5. Step 5: Solve for x
    x = 2,507,646,960,201,229/78,734,777.80
  6. Step 6: Final answer
    x = 31,849,292.40

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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.