Home / 85,884,692.55-128,743,058.03-76,814,766.15

Finding the Fourth Proportional to 85,884,692.55, 128,743,058.03 and 76,814,766.15

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Solution

The fourth proportional to 85,884,692.55, 128,743,058.03 and 76,814,766.15 is: 115,147,037.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,884,692.55 : 128,743,058.03 = 76,814,766.15 : x
  2. Step 2: Convert to fraction form
    85,884,692.55/128,743,058.03 = 76,814,766.15/x
  3. Step 3: Cross multiply
    85,884,692.55x = 128,743,058.03 × 76,814,766.15
  4. Step 4: Simplify right side
    85,884,692.55x = 9,889,367,895,626,258
  5. Step 5: Solve for x
    x = 9,889,367,895,626,258/85,884,692.55
  6. Step 6: Final answer
    x = 115,147,037.29

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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.