Home / 78,217,063.80-117,325,595.70-47,941,985.40

Finding the Fourth Proportional to 78,217,063.80, 117,325,595.70 and 47,941,985.40

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Solution

The fourth proportional to 78,217,063.80, 117,325,595.70 and 47,941,985.40 is: 71,912,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,217,063.80 : 117,325,595.70 = 47,941,985.40 : x
  2. Step 2: Convert to fraction form
    78,217,063.80/117,325,595.70 = 47,941,985.40/x
  3. Step 3: Cross multiply
    78,217,063.80x = 117,325,595.70 × 47,941,985.40
  4. Step 4: Simplify right side
    78,217,063.80x = 5,624,821,996,095,703
  5. Step 5: Solve for x
    x = 5,624,821,996,095,703/78,217,063.80
  6. Step 6: Final answer
    x = 71,912,978.10

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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.