Home / 83,017,872.40-124,526,808.60-78,314,947.60

Finding the Fourth Proportional to 83,017,872.40, 124,526,808.60 and 78,314,947.60

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Solution

The fourth proportional to 83,017,872.40, 124,526,808.60 and 78,314,947.60 is: 117,472,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,017,872.40 : 124,526,808.60 = 78,314,947.60 : x
  2. Step 2: Convert to fraction form
    83,017,872.40/124,526,808.60 = 78,314,947.60/x
  3. Step 3: Cross multiply
    83,017,872.40x = 124,526,808.60 × 78,314,947.60
  4. Step 4: Simplify right side
    83,017,872.40x = 9,752,310,490,304,228
  5. Step 5: Solve for x
    x = 9,752,310,490,304,228/83,017,872.40
  6. Step 6: Final answer
    x = 117,472,421.40

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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.