Home / 78,368.18-117,572.15-36,278.63

Finding the Fourth Proportional to 78,368.18, 117,572.15 and 36,278.63

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Solution

The fourth proportional to 78,368.18, 117,572.15 and 36,278.63 is: 54,427.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,368.18 : 117,572.15 = 36,278.63 : x
  2. Step 2: Convert to fraction form
    78,368.18/117,572.15 = 36,278.63/x
  3. Step 3: Cross multiply
    78,368.18x = 117,572.15 × 36,278.63
  4. Step 4: Simplify right side
    78,368.18x = 4,265,356,030.99
  5. Step 5: Solve for x
    x = 4,265,356,030.99/78,368.18
  6. Step 6: Final answer
    x = 54,427.14

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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.