Home / 78,344.10-108,114.93-42,534.09

Finding the Fourth Proportional to 78,344.10, 108,114.93 and 42,534.09

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Solution

The fourth proportional to 78,344.10, 108,114.93 and 42,534.09 is: 58,697.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,344.10 : 108,114.93 = 42,534.09 : x
  2. Step 2: Convert to fraction form
    78,344.10/108,114.93 = 42,534.09/x
  3. Step 3: Cross multiply
    78,344.10x = 108,114.93 × 42,534.09
  4. Step 4: Simplify right side
    78,344.10x = 4,598,570,162.96
  5. Step 5: Solve for x
    x = 4,598,570,162.96/78,344.10
  6. Step 6: Final answer
    x = 58,697.08

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1.5x scale

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.