Home / 83,017,661.40-124,526,492.10-78,314,736.60

Finding the Fourth Proportional to 83,017,661.40, 124,526,492.10 and 78,314,736.60

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Solution

The fourth proportional to 83,017,661.40, 124,526,492.10 and 78,314,736.60 is: 117,472,104.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,017,661.40 : 124,526,492.10 = 78,314,736.60 : x
  2. Step 2: Convert to fraction form
    83,017,661.40/124,526,492.10 = 78,314,736.60/x
  3. Step 3: Cross multiply
    83,017,661.40x = 124,526,492.10 × 78,314,736.60
  4. Step 4: Simplify right side
    83,017,661.40x = 9,752,259,428,533,480
  5. Step 5: Solve for x
    x = 9,752,259,428,533,480/83,017,661.40
  6. Step 6: Final answer
    x = 117,472,104.90

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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.