Home / 78,926,478.08-108,912,480-47,982,352.64

Finding the Fourth Proportional to 78,926,478.08, 108,912,480 and 47,982,352.64

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Solution

The fourth proportional to 78,926,478.08, 108,912,480 and 47,982,352.64 is: 66,211,962.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,926,478.08 : 108,912,480 = 47,982,352.64 : x
  2. Step 2: Convert to fraction form
    78,926,478.08/108,912,480 = 47,982,352.64/x
  3. Step 3: Cross multiply
    78,926,478.08x = 108,912,480 × 47,982,352.64
  4. Step 4: Simplify right side
    78,926,478.08x = 5,225,877,022,256,947
  5. Step 5: Solve for x
    x = 5,225,877,022,256,947/78,926,478.08
  6. Step 6: Final answer
    x = 66,211,962.69

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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.