Home / 53,985.60-80,853.12-52,116.72

Finding the Fourth Proportional to 53,985.60, 80,853.12 and 52,116.72

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Solution

The fourth proportional to 53,985.60, 80,853.12 and 52,116.72 is: 78,054.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,985.60 : 80,853.12 = 52,116.72 : x
  2. Step 2: Convert to fraction form
    53,985.60/80,853.12 = 52,116.72/x
  3. Step 3: Cross multiply
    53,985.60x = 80,853.12 × 52,116.72
  4. Step 4: Simplify right side
    53,985.60x = 4,213,799,416.17
  5. Step 5: Solve for x
    x = 4,213,799,416.17/53,985.60
  6. Step 6: Final answer
    x = 78,054.14

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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.