Home / 78,573.10-108,157.02-68,484.01

Finding the Fourth Proportional to 78,573.10, 108,157.02 and 68,484.01

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Solution

The fourth proportional to 78,573.10, 108,157.02 and 68,484.01 is: 94,269.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,573.10 : 108,157.02 = 68,484.01 : x
  2. Step 2: Convert to fraction form
    78,573.10/108,157.02 = 68,484.01/x
  3. Step 3: Cross multiply
    78,573.10x = 108,157.02 × 68,484.01
  4. Step 4: Simplify right side
    78,573.10x = 7,407,026,439.25
  5. Step 5: Solve for x
    x = 7,407,026,439.25/78,573.10
  6. Step 6: Final answer
    x = 94,269.24

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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.