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Finding the Fourth Proportional to 74,903,391.80, 112,355,087.70 and 52,209,913.40

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Solution

The fourth proportional to 74,903,391.80, 112,355,087.70 and 52,209,913.40 is: 78,314,870.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,903,391.80 : 112,355,087.70 = 52,209,913.40 : x
  2. Step 2: Convert to fraction form
    74,903,391.80/112,355,087.70 = 52,209,913.40/x
  3. Step 3: Cross multiply
    74,903,391.80x = 112,355,087.70 × 52,209,913.40
  4. Step 4: Simplify right side
    74,903,391.80x = 5,866,049,398,866,405
  5. Step 5: Solve for x
    x = 5,866,049,398,866,405/74,903,391.80
  6. Step 6: Final answer
    x = 78,314,870.10

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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.