Home / 70,213,312.80-105,319,969.20-65,961,784.80

Finding the Fourth Proportional to 70,213,312.80, 105,319,969.20 and 65,961,784.80

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Solution

The fourth proportional to 70,213,312.80, 105,319,969.20 and 65,961,784.80 is: 98,942,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,213,312.80 : 105,319,969.20 = 65,961,784.80 : x
  2. Step 2: Convert to fraction form
    70,213,312.80/105,319,969.20 = 65,961,784.80/x
  3. Step 3: Cross multiply
    70,213,312.80x = 105,319,969.20 × 65,961,784.80
  4. Step 4: Simplify right side
    70,213,312.80x = 6,947,093,143,513,028
  5. Step 5: Solve for x
    x = 6,947,093,143,513,028/70,213,312.80
  6. Step 6: Final answer
    x = 98,942,677.20

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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.