Home / 86,123,191.12-129,038,549.88-51,972,778.96

Finding the Fourth Proportional to 86,123,191.12, 129,038,549.88 and 51,972,778.96

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Solution

The fourth proportional to 86,123,191.12, 129,038,549.88 and 51,972,778.96 is: 77,870,918.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,123,191.12 : 129,038,549.88 = 51,972,778.96 : x
  2. Step 2: Convert to fraction form
    86,123,191.12/129,038,549.88 = 51,972,778.96/x
  3. Step 3: Cross multiply
    86,123,191.12x = 129,038,549.88 × 51,972,778.96
  4. Step 4: Simplify right side
    86,123,191.12x = 6,706,492,030,232,174
  5. Step 5: Solve for x
    x = 6,706,492,030,232,174/86,123,191.12
  6. Step 6: Final answer
    x = 77,870,918.89

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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.