Home / 78,439,585.32-108,202,420.74-47,069,519.40

Finding the Fourth Proportional to 78,439,585.32, 108,202,420.74 and 47,069,519.40

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Solution

The fourth proportional to 78,439,585.32, 108,202,420.74 and 47,069,519.40 is: 64,929,409.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,439,585.32 : 108,202,420.74 = 47,069,519.40 : x
  2. Step 2: Convert to fraction form
    78,439,585.32/108,202,420.74 = 47,069,519.40/x
  3. Step 3: Cross multiply
    78,439,585.32x = 108,202,420.74 × 47,069,519.40
  4. Step 4: Simplify right side
    78,439,585.32x = 5,093,035,942,148,392
  5. Step 5: Solve for x
    x = 5,093,035,942,148,392/78,439,585.32
  6. Step 6: Final answer
    x = 64,929,409.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.