Home / 85,826,705.80-128,740,058.70-74,741,240.20

Finding the Fourth Proportional to 85,826,705.80, 128,740,058.70 and 74,741,240.20

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Solution

The fourth proportional to 85,826,705.80, 128,740,058.70 and 74,741,240.20 is: 112,111,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,826,705.80 : 128,740,058.70 = 74,741,240.20 : x
  2. Step 2: Convert to fraction form
    85,826,705.80/128,740,058.70 = 74,741,240.20/x
  3. Step 3: Cross multiply
    85,826,705.80x = 128,740,058.70 × 74,741,240.20
  4. Step 4: Simplify right side
    85,826,705.80x = 9,622,191,650,658,800
  5. Step 5: Solve for x
    x = 9,622,191,650,658,800/85,826,705.80
  6. Step 6: Final answer
    x = 112,111,860.30

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1.5x scale

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.