Home / 80,728,381.40-121,139,569.32-34,038,938.48

Finding the Fourth Proportional to 80,728,381.40, 121,139,569.32 and 34,038,938.48

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Solution

The fourth proportional to 80,728,381.40, 121,139,569.32 and 34,038,938.48 is: 51,078,223.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,728,381.40 : 121,139,569.32 = 34,038,938.48 : x
  2. Step 2: Convert to fraction form
    80,728,381.40/121,139,569.32 = 34,038,938.48/x
  3. Step 3: Cross multiply
    80,728,381.40x = 121,139,569.32 × 34,038,938.48
  4. Step 4: Simplify right side
    80,728,381.40x = 4,123,462,347,577,175
  5. Step 5: Solve for x
    x = 4,123,462,347,577,175/80,728,381.40
  6. Step 6: Final answer
    x = 51,078,223.99

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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.