Home / 77,981.07-117,023.51-42,451.35

Finding the Fourth Proportional to 77,981.07, 117,023.51 and 42,451.35

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Solution

The fourth proportional to 77,981.07, 117,023.51 and 42,451.35 is: 63,705.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,981.07 : 117,023.51 = 42,451.35 : x
  2. Step 2: Convert to fraction form
    77,981.07/117,023.51 = 42,451.35/x
  3. Step 3: Cross multiply
    77,981.07x = 117,023.51 × 42,451.35
  4. Step 4: Simplify right side
    77,981.07x = 4,967,805,981.24
  5. Step 5: Solve for x
    x = 4,967,805,981.24/77,981.07
  6. Step 6: Final answer
    x = 63,705.28

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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.