Home / 85,808,852.80-128,713,279.20-76,403,003.20

Finding the Fourth Proportional to 85,808,852.80, 128,713,279.20 and 76,403,003.20

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Solution

The fourth proportional to 85,808,852.80, 128,713,279.20 and 76,403,003.20 is: 114,604,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,808,852.80 : 128,713,279.20 = 76,403,003.20 : x
  2. Step 2: Convert to fraction form
    85,808,852.80/128,713,279.20 = 76,403,003.20/x
  3. Step 3: Cross multiply
    85,808,852.80x = 128,713,279.20 × 76,403,003.20
  4. Step 4: Simplify right side
    85,808,852.80x = 9,834,081,082,600,094
  5. Step 5: Solve for x
    x = 9,834,081,082,600,094/85,808,852.80
  6. Step 6: Final answer
    x = 114,604,504.80

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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.