Home / 78,030.69-116,996.85-42,994.95

Finding the Fourth Proportional to 78,030.69, 116,996.85 and 42,994.95

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Solution

The fourth proportional to 78,030.69, 116,996.85 and 42,994.95 is: 64,465.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,030.69 : 116,996.85 = 42,994.95 : x
  2. Step 2: Convert to fraction form
    78,030.69/116,996.85 = 42,994.95/x
  3. Step 3: Cross multiply
    78,030.69x = 116,996.85 × 42,994.95
  4. Step 4: Simplify right side
    78,030.69x = 5,030,273,715.91
  5. Step 5: Solve for x
    x = 5,030,273,715.91/78,030.69
  6. Step 6: Final answer
    x = 64,465.32

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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.