Home / 86,291,569.80-129,437,354.70-74,702,219.40

Finding the Fourth Proportional to 86,291,569.80, 129,437,354.70 and 74,702,219.40

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Solution

The fourth proportional to 86,291,569.80, 129,437,354.70 and 74,702,219.40 is: 112,053,329.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,291,569.80 : 129,437,354.70 = 74,702,219.40 : x
  2. Step 2: Convert to fraction form
    86,291,569.80/129,437,354.70 = 74,702,219.40/x
  3. Step 3: Cross multiply
    86,291,569.80x = 129,437,354.70 × 74,702,219.40
  4. Step 4: Simplify right side
    86,291,569.80x = 9,669,257,669,355,022
  5. Step 5: Solve for x
    x = 9,669,257,669,355,022/86,291,569.80
  6. Step 6: Final answer
    x = 112,053,329.10

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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.