Home / 77,300,916.40-115,965,371.40-38,865,703.60

Finding the Fourth Proportional to 77,300,916.40, 115,965,371.40 and 38,865,703.60

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Solution

The fourth proportional to 77,300,916.40, 115,965,371.40 and 38,865,703.60 is: 58,305,592.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,300,916.40 : 115,965,371.40 = 38,865,703.60 : x
  2. Step 2: Convert to fraction form
    77,300,916.40/115,965,371.40 = 38,865,703.60/x
  3. Step 3: Cross multiply
    77,300,916.40x = 115,965,371.40 × 38,865,703.60
  4. Step 4: Simplify right side
    77,300,916.40x = 4,507,075,752,696,317
  5. Step 5: Solve for x
    x = 4,507,075,752,696,317/77,300,916.40
  6. Step 6: Final answer
    x = 58,305,592.77

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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.