Home / 78,892.20-118,338.30-37,420.20

Finding the Fourth Proportional to 78,892.20, 118,338.30 and 37,420.20

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Solution

The fourth proportional to 78,892.20, 118,338.30 and 37,420.20 is: 56,130.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,892.20 : 118,338.30 = 37,420.20 : x
  2. Step 2: Convert to fraction form
    78,892.20/118,338.30 = 37,420.20/x
  3. Step 3: Cross multiply
    78,892.20x = 118,338.30 × 37,420.20
  4. Step 4: Simplify right side
    78,892.20x = 4,428,242,853.66
  5. Step 5: Solve for x
    x = 4,428,242,853.66/78,892.20
  6. Step 6: Final answer
    x = 56,130.30

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1.5x scale

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.